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Finding the Fourth Proportional to 161,791.80, 242,797.05 and 90,714.30

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Solution

The fourth proportional to 161,791.80, 242,797.05 and 90,714.30 is: 136,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,791.80 : 242,797.05 = 90,714.30 : x
  2. Step 2: Convert to fraction form
    161,791.80/242,797.05 = 90,714.30/x
  3. Step 3: Cross multiply
    161,791.80x = 242,797.05 × 90,714.30
  4. Step 4: Simplify right side
    161,791.80x = 22,025,164,432.82
  5. Step 5: Solve for x
    x = 22,025,164,432.82/161,791.80
  6. Step 6: Final answer
    x = 136,132.76

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1.5x scale

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.