Home / 118,679,862.30-178,019,793.45-72,763,359.90

Finding the Fourth Proportional to 118,679,862.30, 178,019,793.45 and 72,763,359.90

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Solution

The fourth proportional to 118,679,862.30, 178,019,793.45 and 72,763,359.90 is: 109,145,039.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,679,862.30 : 178,019,793.45 = 72,763,359.90 : x
  2. Step 2: Convert to fraction form
    118,679,862.30/178,019,793.45 = 72,763,359.90/x
  3. Step 3: Cross multiply
    118,679,862.30x = 178,019,793.45 × 72,763,359.90
  4. Step 4: Simplify right side
    118,679,862.30x = 12,953,318,300,126,012
  5. Step 5: Solve for x
    x = 12,953,318,300,126,012/118,679,862.30
  6. Step 6: Final answer
    x = 109,145,039.85

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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.