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Finding the Fourth Proportional to 102,545.70, 153,818.55 and 43,361.70

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Solution

The fourth proportional to 102,545.70, 153,818.55 and 43,361.70 is: 65,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,545.70 : 153,818.55 = 43,361.70 : x
  2. Step 2: Convert to fraction form
    102,545.70/153,818.55 = 43,361.70/x
  3. Step 3: Cross multiply
    102,545.70x = 153,818.55 × 43,361.70
  4. Step 4: Simplify right side
    102,545.70x = 6,669,833,819.54
  5. Step 5: Solve for x
    x = 6,669,833,819.54/102,545.70
  6. Step 6: Final answer
    x = 65,042.55

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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.