Home / 109,655.56-151,327.20-61,909.30

Finding the Fourth Proportional to 109,655.56, 151,327.20 and 61,909.30

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Solution

The fourth proportional to 109,655.56, 151,327.20 and 61,909.30 is: 85,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,655.56 : 151,327.20 = 61,909.30 : x
  2. Step 2: Convert to fraction form
    109,655.56/151,327.20 = 61,909.30/x
  3. Step 3: Cross multiply
    109,655.56x = 151,327.20 × 61,909.30
  4. Step 4: Simplify right side
    109,655.56x = 9,368,561,022.96
  5. Step 5: Solve for x
    x = 9,368,561,022.96/109,655.56
  6. Step 6: Final answer
    x = 85,436.26

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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.