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Finding the Fourth Proportional to 163,937.40, 245,906.10 and 80,820.60

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Solution

The fourth proportional to 163,937.40, 245,906.10 and 80,820.60 is: 121,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,937.40 : 245,906.10 = 80,820.60 : x
  2. Step 2: Convert to fraction form
    163,937.40/245,906.10 = 80,820.60/x
  3. Step 3: Cross multiply
    163,937.40x = 245,906.10 × 80,820.60
  4. Step 4: Simplify right side
    163,937.40x = 19,874,278,545.66
  5. Step 5: Solve for x
    x = 19,874,278,545.66/163,937.40
  6. Step 6: Final answer
    x = 121,230.90

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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.