Home / 159,521.13-239,107.60-78,523.89

Finding the Fourth Proportional to 159,521.13, 239,107.60 and 78,523.89

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Solution

The fourth proportional to 159,521.13, 239,107.60 and 78,523.89 is: 117,700.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,521.13 : 239,107.60 = 78,523.89 : x
  2. Step 2: Convert to fraction form
    159,521.13/239,107.60 = 78,523.89/x
  3. Step 3: Cross multiply
    159,521.13x = 239,107.60 × 78,523.89
  4. Step 4: Simplify right side
    159,521.13x = 18,775,659,973.79
  5. Step 5: Solve for x
    x = 18,775,659,973.79/159,521.13
  6. Step 6: Final answer
    x = 117,700.15

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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.