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Finding the Fourth Proportional to 161,714.68, 242,615.80 and 91,643.20

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Solution

The fourth proportional to 161,714.68, 242,615.80 and 91,643.20 is: 137,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,714.68 : 242,615.80 = 91,643.20 : x
  2. Step 2: Convert to fraction form
    161,714.68/242,615.80 = 91,643.20/x
  3. Step 3: Cross multiply
    161,714.68x = 242,615.80 × 91,643.20
  4. Step 4: Simplify right side
    161,714.68x = 22,234,088,282.56
  5. Step 5: Solve for x
    x = 22,234,088,282.56/161,714.68
  6. Step 6: Final answer
    x = 137,489.61

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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.