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Finding the Fourth Proportional to 83,152.80, 125,290.71 and 68,685.84

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Solution

The fourth proportional to 83,152.80, 125,290.71 and 68,685.84 is: 103,492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,152.80 : 125,290.71 = 68,685.84 : x
  2. Step 2: Convert to fraction form
    83,152.80/125,290.71 = 68,685.84/x
  3. Step 3: Cross multiply
    83,152.80x = 125,290.71 × 68,685.84
  4. Step 4: Simplify right side
    83,152.80x = 8,605,697,660.55
  5. Step 5: Solve for x
    x = 8,605,697,660.55/83,152.80
  6. Step 6: Final answer
    x = 103,492.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.