Home / 84,839.10-127,258.65-80,000.70

Finding the Fourth Proportional to 84,839.10, 127,258.65 and 80,000.70

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Solution

The fourth proportional to 84,839.10, 127,258.65 and 80,000.70 is: 120,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,839.10 : 127,258.65 = 80,000.70 : x
  2. Step 2: Convert to fraction form
    84,839.10/127,258.65 = 80,000.70/x
  3. Step 3: Cross multiply
    84,839.10x = 127,258.65 × 80,000.70
  4. Step 4: Simplify right side
    84,839.10x = 10,180,781,081.06
  5. Step 5: Solve for x
    x = 10,180,781,081.06/84,839.10
  6. Step 6: Final answer
    x = 120,001.05

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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.