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Finding the Fourth Proportional to 181,687.20, 250,726.40 and 101,113.28

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Solution

The fourth proportional to 181,687.20, 250,726.40 and 101,113.28 is: 139,535.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,687.20 : 250,726.40 = 101,113.28 : x
  2. Step 2: Convert to fraction form
    181,687.20/250,726.40 = 101,113.28/x
  3. Step 3: Cross multiply
    181,687.20x = 250,726.40 × 101,113.28
  4. Step 4: Simplify right side
    181,687.20x = 25,351,768,686.59
  5. Step 5: Solve for x
    x = 25,351,768,686.59/181,687.20
  6. Step 6: Final answer
    x = 139,535.25

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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.