Home / 106,538.20-159,807.30-87,511.30

Finding the Fourth Proportional to 106,538.20, 159,807.30 and 87,511.30

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Solution

The fourth proportional to 106,538.20, 159,807.30 and 87,511.30 is: 131,266.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,538.20 : 159,807.30 = 87,511.30 : x
  2. Step 2: Convert to fraction form
    106,538.20/159,807.30 = 87,511.30/x
  3. Step 3: Cross multiply
    106,538.20x = 159,807.30 × 87,511.30
  4. Step 4: Simplify right side
    106,538.20x = 13,984,944,572.49
  5. Step 5: Solve for x
    x = 13,984,944,572.49/106,538.20
  6. Step 6: Final answer
    x = 131,266.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.