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Finding the Fourth Proportional to 144,062.40, 215,818.20 and 77,480.40

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Solution

The fourth proportional to 144,062.40, 215,818.20 and 77,480.40 is: 116,072.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,062.40 : 215,818.20 = 77,480.40 : x
  2. Step 2: Convert to fraction form
    144,062.40/215,818.20 = 77,480.40/x
  3. Step 3: Cross multiply
    144,062.40x = 215,818.20 × 77,480.40
  4. Step 4: Simplify right side
    144,062.40x = 16,721,680,463.28
  5. Step 5: Solve for x
    x = 16,721,680,463.28/144,062.40
  6. Step 6: Final answer
    x = 116,072.48

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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.