Home / 100,780.38-151,178.94-30,660.30

Finding the Fourth Proportional to 100,780.38, 151,178.94 and 30,660.30

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Solution

The fourth proportional to 100,780.38, 151,178.94 and 30,660.30 is: 45,993.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,780.38 : 151,178.94 = 30,660.30 : x
  2. Step 2: Convert to fraction form
    100,780.38/151,178.94 = 30,660.30/x
  3. Step 3: Cross multiply
    100,780.38x = 151,178.94 × 30,660.30
  4. Step 4: Simplify right side
    100,780.38x = 4,635,191,654.08
  5. Step 5: Solve for x
    x = 4,635,191,654.08/100,780.38
  6. Step 6: Final answer
    x = 45,993.00

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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.