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Finding the Fourth Proportional to 102,590.90, 153,627.15 and 67,339.70

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Solution

The fourth proportional to 102,590.90, 153,627.15 and 67,339.70 is: 100,839.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,590.90 : 153,627.15 = 67,339.70 : x
  2. Step 2: Convert to fraction form
    102,590.90/153,627.15 = 67,339.70/x
  3. Step 3: Cross multiply
    102,590.90x = 153,627.15 × 67,339.70
  4. Step 4: Simplify right side
    102,590.90x = 10,345,206,192.86
  5. Step 5: Solve for x
    x = 10,345,206,192.86/102,590.90
  6. Step 6: Final answer
    x = 100,839.41

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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.