Home / 158,815.05-219,165.20-87,199.71

Finding the Fourth Proportional to 158,815.05, 219,165.20 and 87,199.71

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Solution

The fourth proportional to 158,815.05, 219,165.20 and 87,199.71 is: 120,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,815.05 : 219,165.20 = 87,199.71 : x
  2. Step 2: Convert to fraction form
    158,815.05/219,165.20 = 87,199.71/x
  3. Step 3: Cross multiply
    158,815.05x = 219,165.20 × 87,199.71
  4. Step 4: Simplify right side
    158,815.05x = 19,111,141,882.09
  5. Step 5: Solve for x
    x = 19,111,141,882.09/158,815.05
  6. Step 6: Final answer
    x = 120,335.84

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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.