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Finding the Fourth Proportional to 108,475.03, 149,710.47 and 65,456.74

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Solution

The fourth proportional to 108,475.03, 149,710.47 and 65,456.74 is: 90,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,475.03 : 149,710.47 = 65,456.74 : x
  2. Step 2: Convert to fraction form
    108,475.03/149,710.47 = 65,456.74/x
  3. Step 3: Cross multiply
    108,475.03x = 149,710.47 × 65,456.74
  4. Step 4: Simplify right side
    108,475.03x = 9,799,559,310.07
  5. Step 5: Solve for x
    x = 9,799,559,310.07/108,475.03
  6. Step 6: Final answer
    x = 90,339.31

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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.