Home / 78,732,079.90-118,098,119.85-75,543,433.90

Finding the Fourth Proportional to 78,732,079.90, 118,098,119.85 and 75,543,433.90

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Solution

The fourth proportional to 78,732,079.90, 118,098,119.85 and 75,543,433.90 is: 113,315,150.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,079.90 : 118,098,119.85 = 75,543,433.90 : x
  2. Step 2: Convert to fraction form
    78,732,079.90/118,098,119.85 = 75,543,433.90/x
  3. Step 3: Cross multiply
    78,732,079.90x = 118,098,119.85 × 75,543,433.90
  4. Step 4: Simplify right side
    78,732,079.90x = 8,921,537,510,602,753
  5. Step 5: Solve for x
    x = 8,921,537,510,602,753/78,732,079.90
  6. Step 6: Final answer
    x = 113,315,150.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.