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Finding the Fourth Proportional to 108,691.80, 162,862.74 and 67,051.32

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Solution

The fourth proportional to 108,691.80, 162,862.74 and 67,051.32 is: 100,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,691.80 : 162,862.74 = 67,051.32 : x
  2. Step 2: Convert to fraction form
    108,691.80/162,862.74 = 67,051.32/x
  3. Step 3: Cross multiply
    108,691.80x = 162,862.74 × 67,051.32
  4. Step 4: Simplify right side
    108,691.80x = 10,920,161,695.82
  5. Step 5: Solve for x
    x = 10,920,161,695.82/108,691.80
  6. Step 6: Final answer
    x = 100,469.05

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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.