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Finding the Fourth Proportional to 85,169.22, 127,866.87 and 72,768.93

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Solution

The fourth proportional to 85,169.22, 127,866.87 and 72,768.93 is: 109,249.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,169.22 : 127,866.87 = 72,768.93 : x
  2. Step 2: Convert to fraction form
    85,169.22/127,866.87 = 72,768.93/x
  3. Step 3: Cross multiply
    85,169.22x = 127,866.87 × 72,768.93
  4. Step 4: Simplify right side
    85,169.22x = 9,304,735,312.35
  5. Step 5: Solve for x
    x = 9,304,735,312.35/85,169.22
  6. Step 6: Final answer
    x = 109,249.98

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1.5x scale

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.