Home / 143,235,611,368.86-197,665,758,213.66-78,131,457,439.50

Finding the Fourth Proportional to 143,235,611,368.86, 197,665,758,213.66 and 78,131,457,439.50

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Solution

The fourth proportional to 143,235,611,368.86, 197,665,758,213.66 and 78,131,457,439.50 is: 107,821,746,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,235,611,368.86 : 197,665,758,213.66 = 78,131,457,439.50 : x
  2. Step 2: Convert to fraction form
    143,235,611,368.86/197,665,758,213.66 = 78,131,457,439.50/x
  3. Step 3: Cross multiply
    143,235,611,368.86x = 197,665,758,213.66 × 78,131,457,439.50
  4. Step 4: Simplify right side
    143,235,611,368.86x = 15,443,913,775,116,084,838,400
  5. Step 5: Solve for x
    x = 15,443,913,775,116,084,838,400/143,235,611,368.86
  6. Step 6: Final answer
    x = 107,821,746,474.38

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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.