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Finding the Fourth Proportional to 159,081.20, 238,621.80 and 133,031.60

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Solution

The fourth proportional to 159,081.20, 238,621.80 and 133,031.60 is: 199,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,081.20 : 238,621.80 = 133,031.60 : x
  2. Step 2: Convert to fraction form
    159,081.20/238,621.80 = 133,031.60/x
  3. Step 3: Cross multiply
    159,081.20x = 238,621.80 × 133,031.60
  4. Step 4: Simplify right side
    159,081.20x = 31,744,239,848.88
  5. Step 5: Solve for x
    x = 31,744,239,848.88/159,081.20
  6. Step 6: Final answer
    x = 199,547.40

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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.