Home / 198,029.76-297,122.40-87,144

Finding the Fourth Proportional to 198,029.76, 297,122.40 and 87,144

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Solution

The fourth proportional to 198,029.76, 297,122.40 and 87,144 is: 130,750.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,029.76 : 297,122.40 = 87,144 : x
  2. Step 2: Convert to fraction form
    198,029.76/297,122.40 = 87,144/x
  3. Step 3: Cross multiply
    198,029.76x = 297,122.40 × 87,144
  4. Step 4: Simplify right side
    198,029.76x = 25,892,434,425.60
  5. Step 5: Solve for x
    x = 25,892,434,425.60/198,029.76
  6. Step 6: Final answer
    x = 130,750.22

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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.