Home / 124,654,015.20-186,981,022.80-78,737,512.80

Finding the Fourth Proportional to 124,654,015.20, 186,981,022.80 and 78,737,512.80

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Solution

The fourth proportional to 124,654,015.20, 186,981,022.80 and 78,737,512.80 is: 118,106,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,654,015.20 : 186,981,022.80 = 78,737,512.80 : x
  2. Step 2: Convert to fraction form
    124,654,015.20/186,981,022.80 = 78,737,512.80/x
  3. Step 3: Cross multiply
    124,654,015.20x = 186,981,022.80 × 78,737,512.80
  4. Step 4: Simplify right side
    124,654,015.20x = 14,722,420,676,072,092
  5. Step 5: Solve for x
    x = 14,722,420,676,072,092/124,654,015.20
  6. Step 6: Final answer
    x = 118,106,269.20

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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.