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Finding the Fourth Proportional to 126,489.16, 174,540.18 and 69,897.16

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Solution

The fourth proportional to 126,489.16, 174,540.18 and 69,897.16 is: 96,449.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,489.16 : 174,540.18 = 69,897.16 : x
  2. Step 2: Convert to fraction form
    126,489.16/174,540.18 = 69,897.16/x
  3. Step 3: Cross multiply
    126,489.16x = 174,540.18 × 69,897.16
  4. Step 4: Simplify right side
    126,489.16x = 12,199,862,887.89
  5. Step 5: Solve for x
    x = 12,199,862,887.89/126,489.16
  6. Step 6: Final answer
    x = 96,449.87

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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.