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Finding the Fourth Proportional to 127,308.70, 175,689.01 and 69,947.49

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Solution

The fourth proportional to 127,308.70, 175,689.01 and 69,947.49 is: 96,529.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,308.70 : 175,689.01 = 69,947.49 : x
  2. Step 2: Convert to fraction form
    127,308.70/175,689.01 = 69,947.49/x
  3. Step 3: Cross multiply
    127,308.70x = 175,689.01 × 69,947.49
  4. Step 4: Simplify right side
    127,308.70x = 12,289,005,270.08
  5. Step 5: Solve for x
    x = 12,289,005,270.08/127,308.70
  6. Step 6: Final answer
    x = 96,529.19

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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.