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Finding the Fourth Proportional to 108,449.47, 149,658.80 and 60,702.81

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Solution

The fourth proportional to 108,449.47, 149,658.80 and 60,702.81 is: 83,769.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,449.47 : 149,658.80 = 60,702.81 : x
  2. Step 2: Convert to fraction form
    108,449.47/149,658.80 = 60,702.81/x
  3. Step 3: Cross multiply
    108,449.47x = 149,658.80 × 60,702.81
  4. Step 4: Simplify right side
    108,449.47x = 9,084,709,701.23
  5. Step 5: Solve for x
    x = 9,084,709,701.23/108,449.47
  6. Step 6: Final answer
    x = 83,769.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.