Home / 106,425.95-159,312.90-68,911.38

Finding the Fourth Proportional to 106,425.95, 159,312.90 and 68,911.38

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Solution

The fourth proportional to 106,425.95, 159,312.90 and 68,911.38 is: 103,155.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,425.95 : 159,312.90 = 68,911.38 : x
  2. Step 2: Convert to fraction form
    106,425.95/159,312.90 = 68,911.38/x
  3. Step 3: Cross multiply
    106,425.95x = 159,312.90 × 68,911.38
  4. Step 4: Simplify right side
    106,425.95x = 10,978,471,790.80
  5. Step 5: Solve for x
    x = 10,978,471,790.80/106,425.95
  6. Step 6: Final answer
    x = 103,155.97

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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.