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Finding the Fourth Proportional to 127,299.78, 175,679.25 and 70,711.16

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Solution

The fourth proportional to 127,299.78, 175,679.25 and 70,711.16 is: 97,584.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,299.78 : 175,679.25 = 70,711.16 : x
  2. Step 2: Convert to fraction form
    127,299.78/175,679.25 = 70,711.16/x
  3. Step 3: Cross multiply
    127,299.78x = 175,679.25 × 70,711.16
  4. Step 4: Simplify right side
    127,299.78x = 12,422,482,677.03
  5. Step 5: Solve for x
    x = 12,422,482,677.03/127,299.78
  6. Step 6: Final answer
    x = 97,584.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.