Home / 138,610.92-191,283.18-74,948.76

Finding the Fourth Proportional to 138,610.92, 191,283.18 and 74,948.76

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Solution

The fourth proportional to 138,610.92, 191,283.18 and 74,948.76 is: 103,429.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,610.92 : 191,283.18 = 74,948.76 : x
  2. Step 2: Convert to fraction form
    138,610.92/191,283.18 = 74,948.76/x
  3. Step 3: Cross multiply
    138,610.92x = 191,283.18 × 74,948.76
  4. Step 4: Simplify right side
    138,610.92x = 14,336,437,149.86
  5. Step 5: Solve for x
    x = 14,336,437,149.86/138,610.92
  6. Step 6: Final answer
    x = 103,429.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.