Home / 79,737,772.80-119,606,659.20-78,981,945.60

Finding the Fourth Proportional to 79,737,772.80, 119,606,659.20 and 78,981,945.60

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Solution

The fourth proportional to 79,737,772.80, 119,606,659.20 and 78,981,945.60 is: 118,472,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,737,772.80 : 119,606,659.20 = 78,981,945.60 : x
  2. Step 2: Convert to fraction form
    79,737,772.80/119,606,659.20 = 78,981,945.60/x
  3. Step 3: Cross multiply
    79,737,772.80x = 119,606,659.20 × 78,981,945.60
  4. Step 4: Simplify right side
    79,737,772.80x = 9,446,766,650,332,140
  5. Step 5: Solve for x
    x = 9,446,766,650,332,140/79,737,772.80
  6. Step 6: Final answer
    x = 118,472,918.40

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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.