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Finding the Fourth Proportional to 170,841.20, 256,261.80 and 87,897.20

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Solution

The fourth proportional to 170,841.20, 256,261.80 and 87,897.20 is: 131,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,841.20 : 256,261.80 = 87,897.20 : x
  2. Step 2: Convert to fraction form
    170,841.20/256,261.80 = 87,897.20/x
  3. Step 3: Cross multiply
    170,841.20x = 256,261.80 × 87,897.20
  4. Step 4: Simplify right side
    170,841.20x = 22,524,694,686.96
  5. Step 5: Solve for x
    x = 22,524,694,686.96/170,841.20
  6. Step 6: Final answer
    x = 131,845.80

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1.5x scale

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.