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Finding the Fourth Proportional to 109,436.80, 164,155.20 and 95,612.80

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Solution

The fourth proportional to 109,436.80, 164,155.20 and 95,612.80 is: 143,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,436.80 : 164,155.20 = 95,612.80 : x
  2. Step 2: Convert to fraction form
    109,436.80/164,155.20 = 95,612.80/x
  3. Step 3: Cross multiply
    109,436.80x = 164,155.20 × 95,612.80
  4. Step 4: Simplify right side
    109,436.80x = 15,695,338,306.56
  5. Step 5: Solve for x
    x = 15,695,338,306.56/109,436.80
  6. Step 6: Final answer
    x = 143,419.20

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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.