Home / 85,147.31-127,720.89-40,158.17

Finding the Fourth Proportional to 85,147.31, 127,720.89 and 40,158.17

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Solution

The fourth proportional to 85,147.31, 127,720.89 and 40,158.17 is: 60,237.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,147.31 : 127,720.89 = 40,158.17 : x
  2. Step 2: Convert to fraction form
    85,147.31/127,720.89 = 40,158.17/x
  3. Step 3: Cross multiply
    85,147.31x = 127,720.89 × 40,158.17
  4. Step 4: Simplify right side
    85,147.31x = 5,129,037,532.47
  5. Step 5: Solve for x
    x = 5,129,037,532.47/85,147.31
  6. Step 6: Final answer
    x = 60,237.22

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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.