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Finding the Fourth Proportional to 108,474.29, 149,696.19 and 65,456.00

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Solution

The fourth proportional to 108,474.29, 149,696.19 and 65,456.00 is: 90,330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,474.29 : 149,696.19 = 65,456.00 : x
  2. Step 2: Convert to fraction form
    108,474.29/149,696.19 = 65,456.00/x
  3. Step 3: Cross multiply
    108,474.29x = 149,696.19 × 65,456.00
  4. Step 4: Simplify right side
    108,474.29x = 9,798,513,064.16
  5. Step 5: Solve for x
    x = 9,798,513,064.16/108,474.29
  6. Step 6: Final answer
    x = 90,330.28

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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.