Home / 138,663.40-191,304.18-90,943.24

Finding the Fourth Proportional to 138,663.40, 191,304.18 and 90,943.24

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Solution

The fourth proportional to 138,663.40, 191,304.18 and 90,943.24 is: 125,468.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,663.40 : 191,304.18 = 90,943.24 : x
  2. Step 2: Convert to fraction form
    138,663.40/191,304.18 = 90,943.24/x
  3. Step 3: Cross multiply
    138,663.40x = 191,304.18 × 90,943.24
  4. Step 4: Simplify right side
    138,663.40x = 17,397,821,954.74
  5. Step 5: Solve for x
    x = 17,397,821,954.74/138,663.40
  6. Step 6: Final answer
    x = 125,468.02

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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.