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Finding the Fourth Proportional to 170,772.58, 256,158.87 and 87,613.54

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Solution

The fourth proportional to 170,772.58, 256,158.87 and 87,613.54 is: 131,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,772.58 : 256,158.87 = 87,613.54 : x
  2. Step 2: Convert to fraction form
    170,772.58/256,158.87 = 87,613.54/x
  3. Step 3: Cross multiply
    170,772.58x = 256,158.87 × 87,613.54
  4. Step 4: Simplify right side
    170,772.58x = 22,442,985,403.10
  5. Step 5: Solve for x
    x = 22,442,985,403.10/170,772.58
  6. Step 6: Final answer
    x = 131,420.31

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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.