Home / 148,974.68-205,572.90-87,711.20

Finding the Fourth Proportional to 148,974.68, 205,572.90 and 87,711.20

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Solution

The fourth proportional to 148,974.68, 205,572.90 and 87,711.20 is: 121,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,974.68 : 205,572.90 = 87,711.20 : x
  2. Step 2: Convert to fraction form
    148,974.68/205,572.90 = 87,711.20/x
  3. Step 3: Cross multiply
    148,974.68x = 205,572.90 × 87,711.20
  4. Step 4: Simplify right side
    148,974.68x = 18,031,045,746.48
  5. Step 5: Solve for x
    x = 18,031,045,746.48/148,974.68
  6. Step 6: Final answer
    x = 121,034.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.