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Finding the Fourth Proportional to 144,086.13, 216,129.20 and 73,920.69

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Solution

The fourth proportional to 144,086.13, 216,129.20 and 73,920.69 is: 110,881.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,086.13 : 216,129.20 = 73,920.69 : x
  2. Step 2: Convert to fraction form
    144,086.13/216,129.20 = 73,920.69/x
  3. Step 3: Cross multiply
    144,086.13x = 216,129.20 × 73,920.69
  4. Step 4: Simplify right side
    144,086.13x = 15,976,419,223.54
  5. Step 5: Solve for x
    x = 15,976,419,223.54/144,086.13
  6. Step 6: Final answer
    x = 110,881.04

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1.5x scale

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.