Home / 143,235,611,660.34-197,665,758,615.83-78,131,457,730.85

Finding the Fourth Proportional to 143,235,611,660.34, 197,665,758,615.83 and 78,131,457,730.85

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Solution

The fourth proportional to 143,235,611,660.34, 197,665,758,615.83 and 78,131,457,730.85 is: 107,821,746,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,235,611,660.34 : 197,665,758,615.83 = 78,131,457,730.85 : x
  2. Step 2: Convert to fraction form
    143,235,611,660.34/197,665,758,615.83 = 78,131,457,730.85/x
  3. Step 3: Cross multiply
    143,235,611,660.34x = 197,665,758,615.83 × 78,131,457,730.85
  4. Step 4: Simplify right side
    143,235,611,660.34x = 15,443,913,864,128,130,711,552
  5. Step 5: Solve for x
    x = 15,443,913,864,128,130,711,552/143,235,611,660.34
  6. Step 6: Final answer
    x = 107,821,746,876.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.