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Finding the Fourth Proportional to 127,591.70, 176,075.16 and 70,229.78

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Solution

The fourth proportional to 127,591.70, 176,075.16 and 70,229.78 is: 96,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,591.70 : 176,075.16 = 70,229.78 : x
  2. Step 2: Convert to fraction form
    127,591.70/176,075.16 = 70,229.78/x
  3. Step 3: Cross multiply
    127,591.70x = 176,075.16 × 70,229.78
  4. Step 4: Simplify right side
    127,591.70x = 12,365,719,750.26
  5. Step 5: Solve for x
    x = 12,365,719,750.26/127,591.70
  6. Step 6: Final answer
    x = 96,916.33

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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.