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Finding the Fourth Proportional to 127,600.40, 191,441.40 and 38,870.80

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Solution

The fourth proportional to 127,600.40, 191,441.40 and 38,870.80 is: 58,318.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,600.40 : 191,441.40 = 38,870.80 : x
  2. Step 2: Convert to fraction form
    127,600.40/191,441.40 = 38,870.80/x
  3. Step 3: Cross multiply
    127,600.40x = 191,441.40 × 38,870.80
  4. Step 4: Simplify right side
    127,600.40x = 7,441,480,371.12
  5. Step 5: Solve for x
    x = 7,441,480,371.12/127,600.40
  6. Step 6: Final answer
    x = 58,318.63

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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.