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Finding the Fourth Proportional to 159,207.20, 238,465.20 and 131,559.20

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Solution

The fourth proportional to 159,207.20, 238,465.20 and 131,559.20 is: 197,053.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,207.20 : 238,465.20 = 131,559.20 : x
  2. Step 2: Convert to fraction form
    159,207.20/238,465.20 = 131,559.20/x
  3. Step 3: Cross multiply
    159,207.20x = 238,465.20 × 131,559.20
  4. Step 4: Simplify right side
    159,207.20x = 31,372,290,939.84
  5. Step 5: Solve for x
    x = 31,372,290,939.84/159,207.20
  6. Step 6: Final answer
    x = 197,053.22

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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.