Home / 85,174.47-127,874.76-72,774.18

Finding the Fourth Proportional to 85,174.47, 127,874.76 and 72,774.18

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Solution

The fourth proportional to 85,174.47, 127,874.76 and 72,774.18 is: 109,257.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,174.47 : 127,874.76 = 72,774.18 : x
  2. Step 2: Convert to fraction form
    85,174.47/127,874.76 = 72,774.18/x
  3. Step 3: Cross multiply
    85,174.47x = 127,874.76 × 72,774.18
  4. Step 4: Simplify right side
    85,174.47x = 9,305,980,801.70
  5. Step 5: Solve for x
    x = 9,305,980,801.70/85,174.47
  6. Step 6: Final answer
    x = 109,257.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.