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Finding the Fourth Proportional to 136,687.70, 205,031.55 and 62,815.70

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Solution

The fourth proportional to 136,687.70, 205,031.55 and 62,815.70 is: 94,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,687.70 : 205,031.55 = 62,815.70 : x
  2. Step 2: Convert to fraction form
    136,687.70/205,031.55 = 62,815.70/x
  3. Step 3: Cross multiply
    136,687.70x = 205,031.55 × 62,815.70
  4. Step 4: Simplify right side
    136,687.70x = 12,879,200,335.34
  5. Step 5: Solve for x
    x = 12,879,200,335.34/136,687.70
  6. Step 6: Final answer
    x = 94,223.55

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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.