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Finding the Fourth Proportional to 83,864.80, 125,866.05 and 83,208.70

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Solution

The fourth proportional to 83,864.80, 125,866.05 and 83,208.70 is: 124,881.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,864.80 : 125,866.05 = 83,208.70 : x
  2. Step 2: Convert to fraction form
    83,864.80/125,866.05 = 83,208.70/x
  3. Step 3: Cross multiply
    83,864.80x = 125,866.05 × 83,208.70
  4. Step 4: Simplify right side
    83,864.80x = 10,473,150,394.64
  5. Step 5: Solve for x
    x = 10,473,150,394.64/83,864.80
  6. Step 6: Final answer
    x = 124,881.36

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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.