Home / 109,438.88-151,016.60-61,703.96

Finding the Fourth Proportional to 109,438.88, 151,016.60 and 61,703.96

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Solution

The fourth proportional to 109,438.88, 151,016.60 and 61,703.96 is: 85,146.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,438.88 : 151,016.60 = 61,703.96 : x
  2. Step 2: Convert to fraction form
    109,438.88/151,016.60 = 61,703.96/x
  3. Step 3: Cross multiply
    109,438.88x = 151,016.60 × 61,703.96
  4. Step 4: Simplify right side
    109,438.88x = 9,318,321,937.22
  5. Step 5: Solve for x
    x = 9,318,321,937.22/109,438.88
  6. Step 6: Final answer
    x = 85,146.36

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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.