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Finding the Fourth Proportional to 83,702.80, 125,554.20 and 83,119.60

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Solution

The fourth proportional to 83,702.80, 125,554.20 and 83,119.60 is: 124,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,702.80 : 125,554.20 = 83,119.60 : x
  2. Step 2: Convert to fraction form
    83,702.80/125,554.20 = 83,119.60/x
  3. Step 3: Cross multiply
    83,702.80x = 125,554.20 × 83,119.60
  4. Step 4: Simplify right side
    83,702.80x = 10,436,014,882.32
  5. Step 5: Solve for x
    x = 10,436,014,882.32/83,702.80
  6. Step 6: Final answer
    x = 124,679.40

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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.