Home / 129,983.89-179,378.96-76,269.80

Finding the Fourth Proportional to 129,983.89, 179,378.96 and 76,269.80

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Solution

The fourth proportional to 129,983.89, 179,378.96 and 76,269.80 is: 105,253.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,983.89 : 179,378.96 = 76,269.80 : x
  2. Step 2: Convert to fraction form
    129,983.89/179,378.96 = 76,269.80/x
  3. Step 3: Cross multiply
    129,983.89x = 179,378.96 × 76,269.80
  4. Step 4: Simplify right side
    129,983.89x = 13,681,197,470.51
  5. Step 5: Solve for x
    x = 13,681,197,470.51/129,983.89
  6. Step 6: Final answer
    x = 105,253.02

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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.