Home / 91,680.12-137,520.28-25,120.82

Finding the Fourth Proportional to 91,680.12, 137,520.28 and 25,120.82

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Solution

The fourth proportional to 91,680.12, 137,520.28 and 25,120.82 is: 37,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,680.12 : 137,520.28 = 25,120.82 : x
  2. Step 2: Convert to fraction form
    91,680.12/137,520.28 = 25,120.82/x
  3. Step 3: Cross multiply
    91,680.12x = 137,520.28 × 25,120.82
  4. Step 4: Simplify right side
    91,680.12x = 3,454,622,200.23
  5. Step 5: Solve for x
    x = 3,454,622,200.23/91,680.12
  6. Step 6: Final answer
    x = 37,681.26

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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.