Home / 134,154.60-200,940.30-81,472.20

Finding the Fourth Proportional to 134,154.60, 200,940.30 and 81,472.20

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Solution

The fourth proportional to 134,154.60, 200,940.30 and 81,472.20 is: 122,031.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,154.60 : 200,940.30 = 81,472.20 : x
  2. Step 2: Convert to fraction form
    134,154.60/200,940.30 = 81,472.20/x
  3. Step 3: Cross multiply
    134,154.60x = 200,940.30 × 81,472.20
  4. Step 4: Simplify right side
    134,154.60x = 16,371,048,309.66
  5. Step 5: Solve for x
    x = 16,371,048,309.66/134,154.60
  6. Step 6: Final answer
    x = 122,031.21

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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.