Home / 84,887.40-127,331.10-76,722.60

Finding the Fourth Proportional to 84,887.40, 127,331.10 and 76,722.60

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Solution

The fourth proportional to 84,887.40, 127,331.10 and 76,722.60 is: 115,083.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,887.40 : 127,331.10 = 76,722.60 : x
  2. Step 2: Convert to fraction form
    84,887.40/127,331.10 = 76,722.60/x
  3. Step 3: Cross multiply
    84,887.40x = 127,331.10 × 76,722.60
  4. Step 4: Simplify right side
    84,887.40x = 9,769,173,052.86
  5. Step 5: Solve for x
    x = 9,769,173,052.86/84,887.40
  6. Step 6: Final answer
    x = 115,083.90

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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.