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Finding the Fourth Proportional to 144,047.80, 215,561.40 and 125,531.20

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Solution

The fourth proportional to 144,047.80, 215,561.40 and 125,531.20 is: 187,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,047.80 : 215,561.40 = 125,531.20 : x
  2. Step 2: Convert to fraction form
    144,047.80/215,561.40 = 125,531.20/x
  3. Step 3: Cross multiply
    144,047.80x = 215,561.40 × 125,531.20
  4. Step 4: Simplify right side
    144,047.80x = 27,059,681,215.68
  5. Step 5: Solve for x
    x = 27,059,681,215.68/144,047.80
  6. Step 6: Final answer
    x = 187,852.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.