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Finding the Fourth Proportional to 136,614.70, 204,703.35 and 89,812.90

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Solution

The fourth proportional to 136,614.70, 204,703.35 and 89,812.90 is: 134,575.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,614.70 : 204,703.35 = 89,812.90 : x
  2. Step 2: Convert to fraction form
    136,614.70/204,703.35 = 89,812.90/x
  3. Step 3: Cross multiply
    136,614.70x = 204,703.35 × 89,812.90
  4. Step 4: Simplify right side
    136,614.70x = 18,385,001,503.22
  5. Step 5: Solve for x
    x = 18,385,001,503.22/136,614.70
  6. Step 6: Final answer
    x = 134,575.57

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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.