Home / 84,743.40-127,115.10-83,965.80

Finding the Fourth Proportional to 84,743.40, 127,115.10 and 83,965.80

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Solution

The fourth proportional to 84,743.40, 127,115.10 and 83,965.80 is: 125,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,743.40 : 127,115.10 = 83,965.80 : x
  2. Step 2: Convert to fraction form
    84,743.40/127,115.10 = 83,965.80/x
  3. Step 3: Cross multiply
    84,743.40x = 127,115.10 × 83,965.80
  4. Step 4: Simplify right side
    84,743.40x = 10,673,321,063.58
  5. Step 5: Solve for x
    x = 10,673,321,063.58/84,743.40
  6. Step 6: Final answer
    x = 125,948.70

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Half scale
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Double scale
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Similar ratio
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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.