Home / 129,864.16-179,216.40-79,534.72

Finding the Fourth Proportional to 129,864.16, 179,216.40 and 79,534.72

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Solution

The fourth proportional to 129,864.16, 179,216.40 and 79,534.72 is: 109,760.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,864.16 : 179,216.40 = 79,534.72 : x
  2. Step 2: Convert to fraction form
    129,864.16/179,216.40 = 79,534.72/x
  3. Step 3: Cross multiply
    129,864.16x = 179,216.40 × 79,534.72
  4. Step 4: Simplify right side
    129,864.16x = 14,253,926,193.41
  5. Step 5: Solve for x
    x = 14,253,926,193.41/129,864.16
  6. Step 6: Final answer
    x = 109,760.28

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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.