Home / 97,979.10-146,640.60-86,169.30

Finding the Fourth Proportional to 97,979.10, 146,640.60 and 86,169.30

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Solution

The fourth proportional to 97,979.10, 146,640.60 and 86,169.30 is: 128,965.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,979.10 : 146,640.60 = 86,169.30 : x
  2. Step 2: Convert to fraction form
    97,979.10/146,640.60 = 86,169.30/x
  3. Step 3: Cross multiply
    97,979.10x = 146,640.60 × 86,169.30
  4. Step 4: Simplify right side
    97,979.10x = 12,635,917,853.58
  5. Step 5: Solve for x
    x = 12,635,917,853.58/97,979.10
  6. Step 6: Final answer
    x = 128,965.44

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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.