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Finding the Fourth Proportional to 83,219.59, 124,828.36 and 79,185.26

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Solution

The fourth proportional to 83,219.59, 124,828.36 and 79,185.26 is: 118,776.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,219.59 : 124,828.36 = 79,185.26 : x
  2. Step 2: Convert to fraction form
    83,219.59/124,828.36 = 79,185.26/x
  3. Step 3: Cross multiply
    83,219.59x = 124,828.36 × 79,185.26
  4. Step 4: Simplify right side
    83,219.59x = 9,884,566,141.97
  5. Step 5: Solve for x
    x = 9,884,566,141.97/83,219.59
  6. Step 6: Final answer
    x = 118,776.91

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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.