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Finding the Fourth Proportional to 136,470.40, 204,475.20 and 89,699.20

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Solution

The fourth proportional to 136,470.40, 204,475.20 and 89,699.20 is: 134,397.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,470.40 : 204,475.20 = 89,699.20 : x
  2. Step 2: Convert to fraction form
    136,470.40/204,475.20 = 89,699.20/x
  3. Step 3: Cross multiply
    136,470.40x = 204,475.20 × 89,699.20
  4. Step 4: Simplify right side
    136,470.40x = 18,341,261,859.84
  5. Step 5: Solve for x
    x = 18,341,261,859.84/136,470.40
  6. Step 6: Final answer
    x = 134,397.36

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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.