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Finding the Fourth Proportional to 84,902.10, 127,353.15 and 75,716.70

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Solution

The fourth proportional to 84,902.10, 127,353.15 and 75,716.70 is: 113,575.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,902.10 : 127,353.15 = 75,716.70 : x
  2. Step 2: Convert to fraction form
    84,902.10/127,353.15 = 75,716.70/x
  3. Step 3: Cross multiply
    84,902.10x = 127,353.15 × 75,716.70
  4. Step 4: Simplify right side
    84,902.10x = 9,642,760,252.61
  5. Step 5: Solve for x
    x = 9,642,760,252.61/84,902.10
  6. Step 6: Final answer
    x = 113,575.05

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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.