Home / 133,031.10-199,287.45-80,283.90

Finding the Fourth Proportional to 133,031.10, 199,287.45 and 80,283.90

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Solution

The fourth proportional to 133,031.10, 199,287.45 and 80,283.90 is: 120,269.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,031.10 : 199,287.45 = 80,283.90 : x
  2. Step 2: Convert to fraction form
    133,031.10/199,287.45 = 80,283.90/x
  3. Step 3: Cross multiply
    133,031.10x = 199,287.45 × 80,283.90
  4. Step 4: Simplify right side
    133,031.10x = 15,999,573,707.06
  5. Step 5: Solve for x
    x = 15,999,573,707.06/133,031.10
  6. Step 6: Final answer
    x = 120,269.42

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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.