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Finding the Fourth Proportional to 108,615.27, 149,888.84 and 66,173.84

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Solution

The fourth proportional to 108,615.27, 149,888.84 and 66,173.84 is: 91,319.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,615.27 : 149,888.84 = 66,173.84 : x
  2. Step 2: Convert to fraction form
    108,615.27/149,888.84 = 66,173.84/x
  3. Step 3: Cross multiply
    108,615.27x = 149,888.84 × 66,173.84
  4. Step 4: Simplify right side
    108,615.27x = 9,918,720,115.95
  5. Step 5: Solve for x
    x = 9,918,720,115.95/108,615.27
  6. Step 6: Final answer
    x = 91,319.76

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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.