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Finding the Fourth Proportional to 170,470.53, 255,678.15 and 80,513.15

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Solution

The fourth proportional to 170,470.53, 255,678.15 and 80,513.15 is: 120,756.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,470.53 : 255,678.15 = 80,513.15 : x
  2. Step 2: Convert to fraction form
    170,470.53/255,678.15 = 80,513.15/x
  3. Step 3: Cross multiply
    170,470.53x = 255,678.15 × 80,513.15
  4. Step 4: Simplify right side
    170,470.53x = 20,585,452,266.21
  5. Step 5: Solve for x
    x = 20,585,452,266.21/170,470.53
  6. Step 6: Final answer
    x = 120,756.66

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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.