Home / 107,956.80-161,732.16-72,835.20

Finding the Fourth Proportional to 107,956.80, 161,732.16 and 72,835.20

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Solution

The fourth proportional to 107,956.80, 161,732.16 and 72,835.20 is: 109,115.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,956.80 : 161,732.16 = 72,835.20 : x
  2. Step 2: Convert to fraction form
    107,956.80/161,732.16 = 72,835.20/x
  3. Step 3: Cross multiply
    107,956.80x = 161,732.16 × 72,835.20
  4. Step 4: Simplify right side
    107,956.80x = 11,779,794,220.03
  5. Step 5: Solve for x
    x = 11,779,794,220.03/107,956.80
  6. Step 6: Final answer
    x = 109,115.82

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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.