Home / 138,592.47-191,257.56-74,930.25

Finding the Fourth Proportional to 138,592.47, 191,257.56 and 74,930.25

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Solution

The fourth proportional to 138,592.47, 191,257.56 and 74,930.25 is: 103,403.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,592.47 : 191,257.56 = 74,930.25 : x
  2. Step 2: Convert to fraction form
    138,592.47/191,257.56 = 74,930.25/x
  3. Step 3: Cross multiply
    138,592.47x = 191,257.56 × 74,930.25
  4. Step 4: Simplify right side
    138,592.47x = 14,330,976,785.19
  5. Step 5: Solve for x
    x = 14,330,976,785.19/138,592.47
  6. Step 6: Final answer
    x = 103,403.72

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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.