Home / 159,031.72-238,586.64-79,107.40

Finding the Fourth Proportional to 159,031.72, 238,586.64 and 79,107.40

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Solution

The fourth proportional to 159,031.72, 238,586.64 and 79,107.40 is: 118,680.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,031.72 : 238,586.64 = 79,107.40 : x
  2. Step 2: Convert to fraction form
    159,031.72/238,586.64 = 79,107.40/x
  3. Step 3: Cross multiply
    159,031.72x = 238,586.64 × 79,107.40
  4. Step 4: Simplify right side
    159,031.72x = 18,873,968,765.14
  5. Step 5: Solve for x
    x = 18,873,968,765.14/159,031.72
  6. Step 6: Final answer
    x = 118,680.53

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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.