Home / 159,390.08-219,959.74-87,770.38

Finding the Fourth Proportional to 159,390.08, 219,959.74 and 87,770.38

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Solution

The fourth proportional to 159,390.08, 219,959.74 and 87,770.38 is: 121,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,390.08 : 219,959.74 = 87,770.38 : x
  2. Step 2: Convert to fraction form
    159,390.08/219,959.74 = 87,770.38/x
  3. Step 3: Cross multiply
    159,390.08x = 219,959.74 × 87,770.38
  4. Step 4: Simplify right side
    159,390.08x = 19,305,949,964.50
  5. Step 5: Solve for x
    x = 19,305,949,964.50/159,390.08
  6. Step 6: Final answer
    x = 121,123.91

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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.