Home / 180,491.28-270,731.17-85,789.59

Finding the Fourth Proportional to 180,491.28, 270,731.17 and 85,789.59

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Solution

The fourth proportional to 180,491.28, 270,731.17 and 85,789.59 is: 128,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,491.28 : 270,731.17 = 85,789.59 : x
  2. Step 2: Convert to fraction form
    180,491.28/270,731.17 = 85,789.59/x
  3. Step 3: Cross multiply
    180,491.28x = 270,731.17 × 85,789.59
  4. Step 4: Simplify right side
    180,491.28x = 23,225,916,074.52
  5. Step 5: Solve for x
    x = 23,225,916,074.52/180,491.28
  6. Step 6: Final answer
    x = 128,681.65

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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.