Home / 129,218.48-193,947.67-66,083.72

Finding the Fourth Proportional to 129,218.48, 193,947.67 and 66,083.72

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Solution

The fourth proportional to 129,218.48, 193,947.67 and 66,083.72 is: 99,186.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,218.48 : 193,947.67 = 66,083.72 : x
  2. Step 2: Convert to fraction form
    129,218.48/193,947.67 = 66,083.72/x
  3. Step 3: Cross multiply
    129,218.48x = 193,947.67 × 66,083.72
  4. Step 4: Simplify right side
    129,218.48x = 12,816,783,351.03
  5. Step 5: Solve for x
    x = 12,816,783,351.03/129,218.48
  6. Step 6: Final answer
    x = 99,186.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.