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Finding the Fourth Proportional to 170,164.80, 255,253.44 and 86,961.60

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Solution

The fourth proportional to 170,164.80, 255,253.44 and 86,961.60 is: 130,445.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,164.80 : 255,253.44 = 86,961.60 : x
  2. Step 2: Convert to fraction form
    170,164.80/255,253.44 = 86,961.60/x
  3. Step 3: Cross multiply
    170,164.80x = 255,253.44 × 86,961.60
  4. Step 4: Simplify right side
    170,164.80x = 22,197,247,547.90
  5. Step 5: Solve for x
    x = 22,197,247,547.90/170,164.80
  6. Step 6: Final answer
    x = 130,445.59

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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.