Home / 129,010.71-193,414.67-81,525.93

Finding the Fourth Proportional to 129,010.71, 193,414.67 and 81,525.93

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Solution

The fourth proportional to 129,010.71, 193,414.67 and 81,525.93 is: 122,224.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,010.71 : 193,414.67 = 81,525.93 : x
  2. Step 2: Convert to fraction form
    129,010.71/193,414.67 = 81,525.93/x
  3. Step 3: Cross multiply
    129,010.71x = 193,414.67 × 81,525.93
  4. Step 4: Simplify right side
    129,010.71x = 15,768,310,847.39
  5. Step 5: Solve for x
    x = 15,768,310,847.39/129,010.71
  6. Step 6: Final answer
    x = 122,224.82

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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.