Home / 127,515.74-191,098.62-80,684.78

Finding the Fourth Proportional to 127,515.74, 191,098.62 and 80,684.78

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Solution

The fourth proportional to 127,515.74, 191,098.62 and 80,684.78 is: 120,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,515.74 : 191,098.62 = 80,684.78 : x
  2. Step 2: Convert to fraction form
    127,515.74/191,098.62 = 80,684.78/x
  3. Step 3: Cross multiply
    127,515.74x = 191,098.62 × 80,684.78
  4. Step 4: Simplify right side
    127,515.74x = 15,418,750,113.00
  5. Step 5: Solve for x
    x = 15,418,750,113.00/127,515.74
  6. Step 6: Final answer
    x = 120,916.45

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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.