Home / 127,760.67-191,443.86-80,915.13

Finding the Fourth Proportional to 127,760.67, 191,443.86 and 80,915.13

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Solution

The fourth proportional to 127,760.67, 191,443.86 and 80,915.13 is: 121,247.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,760.67 : 191,443.86 = 80,915.13 : x
  2. Step 2: Convert to fraction form
    127,760.67/191,443.86 = 80,915.13/x
  3. Step 3: Cross multiply
    127,760.67x = 191,443.86 × 80,915.13
  4. Step 4: Simplify right side
    127,760.67x = 15,490,704,819.60
  5. Step 5: Solve for x
    x = 15,490,704,819.60/127,760.67
  6. Step 6: Final answer
    x = 121,247.84

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1.5x scale

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.