Home / 127,915.40-191,856.30-39,177.80

Finding the Fourth Proportional to 127,915.40, 191,856.30 and 39,177.80

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Solution

The fourth proportional to 127,915.40, 191,856.30 and 39,177.80 is: 58,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,915.40 : 191,856.30 = 39,177.80 : x
  2. Step 2: Convert to fraction form
    127,915.40/191,856.30 = 39,177.80/x
  3. Step 3: Cross multiply
    127,915.40x = 191,856.30 × 39,177.80
  4. Step 4: Simplify right side
    127,915.40x = 7,516,507,750.14
  5. Step 5: Solve for x
    x = 7,516,507,750.14/127,915.40
  6. Step 6: Final answer
    x = 58,761.55

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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.