Home / 99,837.28-137,742.28-65,862.64

Finding the Fourth Proportional to 99,837.28, 137,742.28 and 65,862.64

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Solution

The fourth proportional to 99,837.28, 137,742.28 and 65,862.64 is: 90,868.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,837.28 : 137,742.28 = 65,862.64 : x
  2. Step 2: Convert to fraction form
    99,837.28/137,742.28 = 65,862.64/x
  3. Step 3: Cross multiply
    99,837.28x = 137,742.28 × 65,862.64
  4. Step 4: Simplify right side
    99,837.28x = 9,072,070,200.42
  5. Step 5: Solve for x
    x = 9,072,070,200.42/99,837.28
  6. Step 6: Final answer
    x = 90,868.56

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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.