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Finding the Fourth Proportional to 102,761.16, 154,149.30 and 43,590.12

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Solution

The fourth proportional to 102,761.16, 154,149.30 and 43,590.12 is: 65,388.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,761.16 : 154,149.30 = 43,590.12 : x
  2. Step 2: Convert to fraction form
    102,761.16/154,149.30 = 43,590.12/x
  3. Step 3: Cross multiply
    102,761.16x = 154,149.30 × 43,590.12
  4. Step 4: Simplify right side
    102,761.16x = 6,719,386,484.92
  5. Step 5: Solve for x
    x = 6,719,386,484.92/102,761.16
  6. Step 6: Final answer
    x = 65,388.39

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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.