Home / 138,721.74-191,436.20-75,059.52

Finding the Fourth Proportional to 138,721.74, 191,436.20 and 75,059.52

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Solution

The fourth proportional to 138,721.74, 191,436.20 and 75,059.52 is: 103,582.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,721.74 : 191,436.20 = 75,059.52 : x
  2. Step 2: Convert to fraction form
    138,721.74/191,436.20 = 75,059.52/x
  3. Step 3: Cross multiply
    138,721.74x = 191,436.20 × 75,059.52
  4. Step 4: Simplify right side
    138,721.74x = 14,369,109,282.62
  5. Step 5: Solve for x
    x = 14,369,109,282.62/138,721.74
  6. Step 6: Final answer
    x = 103,582.25

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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.