Home / 129,937.66-179,315.30-76,223.59

Finding the Fourth Proportional to 129,937.66, 179,315.30 and 76,223.59

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Solution

The fourth proportional to 129,937.66, 179,315.30 and 76,223.59 is: 105,189.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,937.66 : 179,315.30 = 76,223.59 : x
  2. Step 2: Convert to fraction form
    129,937.66/179,315.30 = 76,223.59/x
  3. Step 3: Cross multiply
    129,937.66x = 179,315.30 × 76,223.59
  4. Step 4: Simplify right side
    129,937.66x = 13,668,055,650.20
  5. Step 5: Solve for x
    x = 13,668,055,650.20/129,937.66
  6. Step 6: Final answer
    x = 105,189.33

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1.5x scale

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.