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Finding the Fourth Proportional to 108,937.90, 163,464.90 and 42,380.20

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Solution

The fourth proportional to 108,937.90, 163,464.90 and 42,380.20 is: 63,592.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,937.90 : 163,464.90 = 42,380.20 : x
  2. Step 2: Convert to fraction form
    108,937.90/163,464.90 = 42,380.20/x
  3. Step 3: Cross multiply
    108,937.90x = 163,464.90 × 42,380.20
  4. Step 4: Simplify right side
    108,937.90x = 6,927,675,154.98
  5. Step 5: Solve for x
    x = 6,927,675,154.98/108,937.90
  6. Step 6: Final answer
    x = 63,592.88

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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.