Home / 159,488.28-220,085.94-87,866.40

Finding the Fourth Proportional to 159,488.28, 220,085.94 and 87,866.40

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Solution

The fourth proportional to 159,488.28, 220,085.94 and 87,866.40 is: 121,251.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,488.28 : 220,085.94 = 87,866.40 : x
  2. Step 2: Convert to fraction form
    159,488.28/220,085.94 = 87,866.40/x
  3. Step 3: Cross multiply
    159,488.28x = 220,085.94 × 87,866.40
  4. Step 4: Simplify right side
    159,488.28x = 19,338,159,238.42
  5. Step 5: Solve for x
    x = 19,338,159,238.42/159,488.28
  6. Step 6: Final answer
    x = 121,251.29

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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.