Home / 129,989.16-179,388.72-73,409.04

Finding the Fourth Proportional to 129,989.16, 179,388.72 and 73,409.04

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Solution

The fourth proportional to 129,989.16, 179,388.72 and 73,409.04 is: 101,306.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,989.16 : 179,388.72 = 73,409.04 : x
  2. Step 2: Convert to fraction form
    129,989.16/179,388.72 = 73,409.04/x
  3. Step 3: Cross multiply
    129,989.16x = 179,388.72 × 73,409.04
  4. Step 4: Simplify right side
    129,989.16x = 13,168,753,722.03
  5. Step 5: Solve for x
    x = 13,168,753,722.03/129,989.16
  6. Step 6: Final answer
    x = 101,306.55

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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.