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Finding the Fourth Proportional to 83,353.79, 125,301.63 and 66,894.18

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Solution

The fourth proportional to 83,353.79, 125,301.63 and 66,894.18 is: 100,558.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,353.79 : 125,301.63 = 66,894.18 : x
  2. Step 2: Convert to fraction form
    83,353.79/125,301.63 = 66,894.18/x
  3. Step 3: Cross multiply
    83,353.79x = 125,301.63 × 66,894.18
  4. Step 4: Simplify right side
    83,353.79x = 8,381,949,791.51
  5. Step 5: Solve for x
    x = 8,381,949,791.51/83,353.79
  6. Step 6: Final answer
    x = 100,558.72

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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.