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Finding the Fourth Proportional to 107,321.80, 160,809.90 and 89,696.20

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Solution

The fourth proportional to 107,321.80, 160,809.90 and 89,696.20 is: 134,399.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,321.80 : 160,809.90 = 89,696.20 : x
  2. Step 2: Convert to fraction form
    107,321.80/160,809.90 = 89,696.20/x
  3. Step 3: Cross multiply
    107,321.80x = 160,809.90 × 89,696.20
  4. Step 4: Simplify right side
    107,321.80x = 14,424,036,952.38
  5. Step 5: Solve for x
    x = 14,424,036,952.38/107,321.80
  6. Step 6: Final answer
    x = 134,399.88

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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.