Home / 159,031.38-219,458.97-87,411.42

Finding the Fourth Proportional to 159,031.38, 219,458.97 and 87,411.42

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Solution

The fourth proportional to 159,031.38, 219,458.97 and 87,411.42 is: 120,625.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,031.38 : 219,458.97 = 87,411.42 : x
  2. Step 2: Convert to fraction form
    159,031.38/219,458.97 = 87,411.42/x
  3. Step 3: Cross multiply
    159,031.38x = 219,458.97 × 87,411.42
  4. Step 4: Simplify right side
    159,031.38x = 19,183,220,199.44
  5. Step 5: Solve for x
    x = 19,183,220,199.44/159,031.38
  6. Step 6: Final answer
    x = 120,625.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.