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Finding the Fourth Proportional to 144,078.70, 216,101.04 and 38,905.87

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Solution

The fourth proportional to 144,078.70, 216,101.04 and 38,905.87 is: 58,354.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,078.70 : 216,101.04 = 38,905.87 : x
  2. Step 2: Convert to fraction form
    144,078.70/216,101.04 = 38,905.87/x
  3. Step 3: Cross multiply
    144,078.70x = 216,101.04 × 38,905.87
  4. Step 4: Simplify right side
    144,078.70x = 8,407,598,969.10
  5. Step 5: Solve for x
    x = 8,407,598,969.10/144,078.70
  6. Step 6: Final answer
    x = 58,354.21

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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.