Home / 83,002,865.40-124,504,298.10-81,869,124.60

Finding the Fourth Proportional to 83,002,865.40, 124,504,298.10 and 81,869,124.60

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Solution

The fourth proportional to 83,002,865.40, 124,504,298.10 and 81,869,124.60 is: 122,803,686.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,002,865.40 : 124,504,298.10 = 81,869,124.60 : x
  2. Step 2: Convert to fraction form
    83,002,865.40/124,504,298.10 = 81,869,124.60/x
  3. Step 3: Cross multiply
    83,002,865.40x = 124,504,298.10 × 81,869,124.60
  4. Step 4: Simplify right side
    83,002,865.40x = 10,193,057,894,384,442
  5. Step 5: Solve for x
    x = 10,193,057,894,384,442/83,002,865.40
  6. Step 6: Final answer
    x = 122,803,686.90

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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.