Home / 105,979.32-159,000.78-42,766.92

Finding the Fourth Proportional to 105,979.32, 159,000.78 and 42,766.92

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Solution

The fourth proportional to 105,979.32, 159,000.78 and 42,766.92 is: 64,163.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,979.32 : 159,000.78 = 42,766.92 : x
  2. Step 2: Convert to fraction form
    105,979.32/159,000.78 = 42,766.92/x
  3. Step 3: Cross multiply
    105,979.32x = 159,000.78 × 42,766.92
  4. Step 4: Simplify right side
    105,979.32x = 6,799,973,638.20
  5. Step 5: Solve for x
    x = 6,799,973,638.20/105,979.32
  6. Step 6: Final answer
    x = 64,163.21

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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.