Home / 197,881.12-296,710.72-85,491.20

Finding the Fourth Proportional to 197,881.12, 296,710.72 and 85,491.20

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Solution

The fourth proportional to 197,881.12, 296,710.72 and 85,491.20 is: 128,188.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,881.12 : 296,710.72 = 85,491.20 : x
  2. Step 2: Convert to fraction form
    197,881.12/296,710.72 = 85,491.20/x
  3. Step 3: Cross multiply
    197,881.12x = 296,710.72 × 85,491.20
  4. Step 4: Simplify right side
    197,881.12x = 25,366,155,505.66
  5. Step 5: Solve for x
    x = 25,366,155,505.66/197,881.12
  6. Step 6: Final answer
    x = 128,188.86

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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.