Home / 85,147.04-127,720.20-25,982.51

Finding the Fourth Proportional to 85,147.04, 127,720.20 and 25,982.51

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Solution

The fourth proportional to 85,147.04, 127,720.20 and 25,982.51 is: 38,973.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,147.04 : 127,720.20 = 25,982.51 : x
  2. Step 2: Convert to fraction form
    85,147.04/127,720.20 = 25,982.51/x
  3. Step 3: Cross multiply
    85,147.04x = 127,720.20 × 25,982.51
  4. Step 4: Simplify right side
    85,147.04x = 3,318,491,373.70
  5. Step 5: Solve for x
    x = 3,318,491,373.70/85,147.04
  6. Step 6: Final answer
    x = 38,973.66

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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.