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Finding the Fourth Proportional to 170,752.95, 256,129.43 and 168,128.55

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Solution

The fourth proportional to 170,752.95, 256,129.43 and 168,128.55 is: 252,192.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,752.95 : 256,129.43 = 168,128.55 : x
  2. Step 2: Convert to fraction form
    170,752.95/256,129.43 = 168,128.55/x
  3. Step 3: Cross multiply
    170,752.95x = 256,129.43 × 168,128.55
  4. Step 4: Simplify right side
    170,752.95x = 43,062,668,837.58
  5. Step 5: Solve for x
    x = 43,062,668,837.58/170,752.95
  6. Step 6: Final answer
    x = 252,192.83

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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.