Home / 127,514.74-191,097.12-80,683.78

Finding the Fourth Proportional to 127,514.74, 191,097.12 and 80,683.78

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Solution

The fourth proportional to 127,514.74, 191,097.12 and 80,683.78 is: 120,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,514.74 : 191,097.12 = 80,683.78 : x
  2. Step 2: Convert to fraction form
    127,514.74/191,097.12 = 80,683.78/x
  3. Step 3: Cross multiply
    127,514.74x = 191,097.12 × 80,683.78
  4. Step 4: Simplify right side
    127,514.74x = 15,418,437,988.71
  5. Step 5: Solve for x
    x = 15,418,437,988.71/127,514.74
  6. Step 6: Final answer
    x = 120,914.95

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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.