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Finding the Fourth Proportional to 92,120.16, 127,129.92 and 54,394.56

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Solution

The fourth proportional to 92,120.16, 127,129.92 and 54,394.56 is: 75,066.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,120.16 : 127,129.92 = 54,394.56 : x
  2. Step 2: Convert to fraction form
    92,120.16/127,129.92 = 54,394.56/x
  3. Step 3: Cross multiply
    92,120.16x = 127,129.92 × 54,394.56
  4. Step 4: Simplify right side
    92,120.16x = 6,915,176,061.24
  5. Step 5: Solve for x
    x = 6,915,176,061.24/92,120.16
  6. Step 6: Final answer
    x = 75,066.91

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1.5x scale

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.