Home / 129,816.11-179,005.00-84,409.89

Finding the Fourth Proportional to 129,816.11, 179,005.00 and 84,409.89

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Solution

The fourth proportional to 129,816.11, 179,005.00 and 84,409.89 is: 116,393.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,816.11 : 179,005.00 = 84,409.89 : x
  2. Step 2: Convert to fraction form
    129,816.11/179,005.00 = 84,409.89/x
  3. Step 3: Cross multiply
    129,816.11x = 179,005.00 × 84,409.89
  4. Step 4: Simplify right side
    129,816.11x = 15,109,791,042.38
  5. Step 5: Solve for x
    x = 15,109,791,042.38/129,816.11
  6. Step 6: Final answer
    x = 116,393.81

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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.