Home / 159,519.80-220,141.95-87,904.44

Finding the Fourth Proportional to 159,519.80, 220,141.95 and 87,904.44

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Solution

The fourth proportional to 159,519.80, 220,141.95 and 87,904.44 is: 121,310.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,519.80 : 220,141.95 = 87,904.44 : x
  2. Step 2: Convert to fraction form
    159,519.80/220,141.95 = 87,904.44/x
  3. Step 3: Cross multiply
    159,519.80x = 220,141.95 × 87,904.44
  4. Step 4: Simplify right side
    159,519.80x = 19,351,455,000.08
  5. Step 5: Solve for x
    x = 19,351,455,000.08/159,519.80
  6. Step 6: Final answer
    x = 121,310.68

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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.