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Finding the Fourth Proportional to 83,358.79, 125,309.13 and 66,899.18

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Solution

The fourth proportional to 83,358.79, 125,309.13 and 66,899.18 is: 100,566.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,358.79 : 125,309.13 = 66,899.18 : x
  2. Step 2: Convert to fraction form
    83,358.79/125,309.13 = 66,899.18/x
  3. Step 3: Cross multiply
    83,358.79x = 125,309.13 × 66,899.18
  4. Step 4: Simplify right side
    83,358.79x = 8,383,078,043.51
  5. Step 5: Solve for x
    x = 8,383,078,043.51/83,358.79
  6. Step 6: Final answer
    x = 100,566.22

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1.5x scale

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.