Home / 129,739.77-179,040.92-73,151.15

Finding the Fourth Proportional to 129,739.77, 179,040.92 and 73,151.15

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Solution

The fourth proportional to 129,739.77, 179,040.92 and 73,151.15 is: 100,948.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,739.77 : 179,040.92 = 73,151.15 : x
  2. Step 2: Convert to fraction form
    129,739.77/179,040.92 = 73,151.15/x
  3. Step 3: Cross multiply
    129,739.77x = 179,040.92 × 73,151.15
  4. Step 4: Simplify right side
    129,739.77x = 13,097,047,934.10
  5. Step 5: Solve for x
    x = 13,097,047,934.10/129,739.77
  6. Step 6: Final answer
    x = 100,948.60

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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.