Home / 107,939.20-161,870.40-48,803.20

Finding the Fourth Proportional to 107,939.20, 161,870.40 and 48,803.20

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Solution

The fourth proportional to 107,939.20, 161,870.40 and 48,803.20 is: 73,187.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,939.20 : 161,870.40 = 48,803.20 : x
  2. Step 2: Convert to fraction form
    107,939.20/161,870.40 = 48,803.20/x
  3. Step 3: Cross multiply
    107,939.20x = 161,870.40 × 48,803.20
  4. Step 4: Simplify right side
    107,939.20x = 7,899,793,505.28
  5. Step 5: Solve for x
    x = 7,899,793,505.28/107,939.20
  6. Step 6: Final answer
    x = 73,187.44

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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.