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Finding the Fourth Proportional to 169,962.10, 255,016.05 and 86,856.10

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Solution

The fourth proportional to 169,962.10, 255,016.05 and 86,856.10 is: 130,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,962.10 : 255,016.05 = 86,856.10 : x
  2. Step 2: Convert to fraction form
    169,962.10/255,016.05 = 86,856.10/x
  3. Step 3: Cross multiply
    169,962.10x = 255,016.05 × 86,856.10
  4. Step 4: Simplify right side
    169,962.10x = 22,149,699,540.41
  5. Step 5: Solve for x
    x = 22,149,699,540.41/169,962.10
  6. Step 6: Final answer
    x = 130,321.40

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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.