Home / 129,756.68-193,345.15-115,608

Finding the Fourth Proportional to 129,756.68, 193,345.15 and 115,608

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Solution

The fourth proportional to 129,756.68, 193,345.15 and 115,608 is: 172,262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,756.68 : 193,345.15 = 115,608 : x
  2. Step 2: Convert to fraction form
    129,756.68/193,345.15 = 115,608/x
  3. Step 3: Cross multiply
    129,756.68x = 193,345.15 × 115,608
  4. Step 4: Simplify right side
    129,756.68x = 22,352,245,812.18
  5. Step 5: Solve for x
    x = 22,352,245,812.18/129,756.68
  6. Step 6: Final answer
    x = 172,262.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.