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Finding the Fourth Proportional to 109,818.80, 164,728.20 and 26,712.80

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Solution

The fourth proportional to 109,818.80, 164,728.20 and 26,712.80 is: 40,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,818.80 : 164,728.20 = 26,712.80 : x
  2. Step 2: Convert to fraction form
    109,818.80/164,728.20 = 26,712.80/x
  3. Step 3: Cross multiply
    109,818.80x = 164,728.20 × 26,712.80
  4. Step 4: Simplify right side
    109,818.80x = 4,400,351,460.96
  5. Step 5: Solve for x
    x = 4,400,351,460.96/109,818.80
  6. Step 6: Final answer
    x = 40,069.20

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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.