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Finding the Fourth Proportional to 108,473.52, 149,708.40 and 65,455.23

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Solution

The fourth proportional to 108,473.52, 149,708.40 and 65,455.23 is: 90,337.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,473.52 : 149,708.40 = 65,455.23 : x
  2. Step 2: Convert to fraction form
    108,473.52/149,708.40 = 65,455.23/x
  3. Step 3: Cross multiply
    108,473.52x = 149,708.40 × 65,455.23
  4. Step 4: Simplify right side
    108,473.52x = 9,799,197,754.93
  5. Step 5: Solve for x
    x = 9,799,197,754.93/108,473.52
  6. Step 6: Final answer
    x = 90,337.23

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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.