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Finding the Fourth Proportional to 144,866.20, 217,040.10 and 89,397.40

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Solution

The fourth proportional to 144,866.20, 217,040.10 and 89,397.40 is: 133,936.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,866.20 : 217,040.10 = 89,397.40 : x
  2. Step 2: Convert to fraction form
    144,866.20/217,040.10 = 89,397.40/x
  3. Step 3: Cross multiply
    144,866.20x = 217,040.10 × 89,397.40
  4. Step 4: Simplify right side
    144,866.20x = 19,402,820,635.74
  5. Step 5: Solve for x
    x = 19,402,820,635.74/144,866.20
  6. Step 6: Final answer
    x = 133,936.15

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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.