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Finding the Fourth Proportional to 127,722.75, 176,311.65 and 90,952.80

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Solution

The fourth proportional to 127,722.75, 176,311.65 and 90,952.80 is: 125,553.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,722.75 : 176,311.65 = 90,952.80 : x
  2. Step 2: Convert to fraction form
    127,722.75/176,311.65 = 90,952.80/x
  3. Step 3: Cross multiply
    127,722.75x = 176,311.65 × 90,952.80
  4. Step 4: Simplify right side
    127,722.75x = 16,036,038,240.12
  5. Step 5: Solve for x
    x = 16,036,038,240.12/127,722.75
  6. Step 6: Final answer
    x = 125,553.50

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1.5x scale

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.