Home / 84,979.64-127,452.18-80,764.40

Finding the Fourth Proportional to 84,979.64, 127,452.18 and 80,764.40

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Solution

The fourth proportional to 84,979.64, 127,452.18 and 80,764.40 is: 121,130.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,979.64 : 127,452.18 = 80,764.40 : x
  2. Step 2: Convert to fraction form
    84,979.64/127,452.18 = 80,764.40/x
  3. Step 3: Cross multiply
    84,979.64x = 127,452.18 × 80,764.40
  4. Step 4: Simplify right side
    84,979.64x = 10,293,598,846.39
  5. Step 5: Solve for x
    x = 10,293,598,846.39/84,979.64
  6. Step 6: Final answer
    x = 121,130.18

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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.