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Finding the Fourth Proportional to 133,090.80, 199,367.40 and 83,017.20

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Solution

The fourth proportional to 133,090.80, 199,367.40 and 83,017.20 is: 124,358.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,090.80 : 199,367.40 = 83,017.20 : x
  2. Step 2: Convert to fraction form
    133,090.80/199,367.40 = 83,017.20/x
  3. Step 3: Cross multiply
    133,090.80x = 199,367.40 × 83,017.20
  4. Step 4: Simplify right side
    133,090.80x = 16,550,923,319.28
  5. Step 5: Solve for x
    x = 16,550,923,319.28/133,090.80
  6. Step 6: Final answer
    x = 124,358.13

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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.