Home / 111,088.49-166,245.21-90,864.18

Finding the Fourth Proportional to 111,088.49, 166,245.21 and 90,864.18

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Solution

The fourth proportional to 111,088.49, 166,245.21 and 90,864.18 is: 135,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,088.49 : 166,245.21 = 90,864.18 : x
  2. Step 2: Convert to fraction form
    111,088.49/166,245.21 = 90,864.18/x
  3. Step 3: Cross multiply
    111,088.49x = 166,245.21 × 90,864.18
  4. Step 4: Simplify right side
    111,088.49x = 15,105,734,685.58
  5. Step 5: Solve for x
    x = 15,105,734,685.58/111,088.49
  6. Step 6: Final answer
    x = 135,979.30

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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.