Home / 143,235,611,353.11-197,665,758,191.99-78,131,457,423.77

Finding the Fourth Proportional to 143,235,611,353.11, 197,665,758,191.99 and 78,131,457,423.77

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Solution

The fourth proportional to 143,235,611,353.11, 197,665,758,191.99 and 78,131,457,423.77 is: 107,821,746,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,235,611,353.11 : 197,665,758,191.99 = 78,131,457,423.77 : x
  2. Step 2: Convert to fraction form
    143,235,611,353.11/197,665,758,191.99 = 78,131,457,423.77/x
  3. Step 3: Cross multiply
    143,235,611,353.11x = 197,665,758,191.99 × 78,131,457,423.77
  4. Step 4: Simplify right side
    143,235,611,353.11x = 15,443,913,770,314,682,597,376
  5. Step 5: Solve for x
    x = 15,443,913,770,314,682,597,376/143,235,611,353.11
  6. Step 6: Final answer
    x = 107,821,746,452.72

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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.