Home / 158,731.38-219,042.41-87,112.59

Finding the Fourth Proportional to 158,731.38, 219,042.41 and 87,112.59

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Solution

The fourth proportional to 158,731.38, 219,042.41 and 87,112.59 is: 120,211.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,731.38 : 219,042.41 = 87,112.59 : x
  2. Step 2: Convert to fraction form
    158,731.38/219,042.41 = 87,112.59/x
  3. Step 3: Cross multiply
    158,731.38x = 219,042.41 × 87,112.59
  4. Step 4: Simplify right side
    158,731.38x = 19,081,351,219.38
  5. Step 5: Solve for x
    x = 19,081,351,219.38/158,731.38
  6. Step 6: Final answer
    x = 120,211.59

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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.