Home / 115,855.50-159,872.03-64,856.48

Finding the Fourth Proportional to 115,855.50, 159,872.03 and 64,856.48

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Solution

The fourth proportional to 115,855.50, 159,872.03 and 64,856.48 is: 89,497.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,855.50 : 159,872.03 = 64,856.48 : x
  2. Step 2: Convert to fraction form
    115,855.50/159,872.03 = 64,856.48/x
  3. Step 3: Cross multiply
    115,855.50x = 159,872.03 × 64,856.48
  4. Step 4: Simplify right side
    115,855.50x = 10,368,737,116.25
  5. Step 5: Solve for x
    x = 10,368,737,116.25/115,855.50
  6. Step 6: Final answer
    x = 89,497.15

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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.