Home / 198,031.76-297,125.40-87,146

Finding the Fourth Proportional to 198,031.76, 297,125.40 and 87,146

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Solution

The fourth proportional to 198,031.76, 297,125.40 and 87,146 is: 130,753.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,031.76 : 297,125.40 = 87,146 : x
  2. Step 2: Convert to fraction form
    198,031.76/297,125.40 = 87,146/x
  3. Step 3: Cross multiply
    198,031.76x = 297,125.40 × 87,146
  4. Step 4: Simplify right side
    198,031.76x = 25,893,290,108.40
  5. Step 5: Solve for x
    x = 25,893,290,108.40/198,031.76
  6. Step 6: Final answer
    x = 130,753.22

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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.