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Finding the Fourth Proportional to 108,963.60, 163,445.40 and 38,845.20

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Solution

The fourth proportional to 108,963.60, 163,445.40 and 38,845.20 is: 58,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,963.60 : 163,445.40 = 38,845.20 : x
  2. Step 2: Convert to fraction form
    108,963.60/163,445.40 = 38,845.20/x
  3. Step 3: Cross multiply
    108,963.60x = 163,445.40 × 38,845.20
  4. Step 4: Simplify right side
    108,963.60x = 6,349,069,252.08
  5. Step 5: Solve for x
    x = 6,349,069,252.08/108,963.60
  6. Step 6: Final answer
    x = 58,267.80

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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.