Home / 109,726.20-151,431.48-61,988.31

Finding the Fourth Proportional to 109,726.20, 151,431.48 and 61,988.31

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Solution

The fourth proportional to 109,726.20, 151,431.48 and 61,988.31 is: 85,549.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,726.20 : 151,431.48 = 61,988.31 : x
  2. Step 2: Convert to fraction form
    109,726.20/151,431.48 = 61,988.31/x
  3. Step 3: Cross multiply
    109,726.20x = 151,431.48 × 61,988.31
  4. Step 4: Simplify right side
    109,726.20x = 9,386,981,526.00
  5. Step 5: Solve for x
    x = 9,386,981,526.00/109,726.20
  6. Step 6: Final answer
    x = 85,549.14

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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.