Home / 138,569.40-207,854.10-49,825.80

Finding the Fourth Proportional to 138,569.40, 207,854.10 and 49,825.80

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Solution

The fourth proportional to 138,569.40, 207,854.10 and 49,825.80 is: 74,738.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,569.40 : 207,854.10 = 49,825.80 : x
  2. Step 2: Convert to fraction form
    138,569.40/207,854.10 = 49,825.80/x
  3. Step 3: Cross multiply
    138,569.40x = 207,854.10 × 49,825.80
  4. Step 4: Simplify right side
    138,569.40x = 10,356,496,815.78
  5. Step 5: Solve for x
    x = 10,356,496,815.78/138,569.40
  6. Step 6: Final answer
    x = 74,738.70

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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.