Home / 107,939.52-161,964.36-72,805.50

Finding the Fourth Proportional to 107,939.52, 161,964.36 and 72,805.50

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Solution

The fourth proportional to 107,939.52, 161,964.36 and 72,805.50 is: 109,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,939.52 : 161,964.36 = 72,805.50 : x
  2. Step 2: Convert to fraction form
    107,939.52/161,964.36 = 72,805.50/x
  3. Step 3: Cross multiply
    107,939.52x = 161,964.36 × 72,805.50
  4. Step 4: Simplify right side
    107,939.52x = 11,791,896,211.98
  5. Step 5: Solve for x
    x = 11,791,896,211.98/107,939.52
  6. Step 6: Final answer
    x = 109,245.40

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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.