Home / 86,945.40-130,418.10-73,167.30

Finding the Fourth Proportional to 86,945.40, 130,418.10 and 73,167.30

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Solution

The fourth proportional to 86,945.40, 130,418.10 and 73,167.30 is: 109,750.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,945.40 : 130,418.10 = 73,167.30 : x
  2. Step 2: Convert to fraction form
    86,945.40/130,418.10 = 73,167.30/x
  3. Step 3: Cross multiply
    86,945.40x = 130,418.10 × 73,167.30
  4. Step 4: Simplify right side
    86,945.40x = 9,542,340,248.13
  5. Step 5: Solve for x
    x = 9,542,340,248.13/86,945.40
  6. Step 6: Final answer
    x = 109,750.95

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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.