Home / 106,263.90-159,395.04-39,720.78

Finding the Fourth Proportional to 106,263.90, 159,395.04 and 39,720.78

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Solution

The fourth proportional to 106,263.90, 159,395.04 and 39,720.78 is: 59,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,263.90 : 159,395.04 = 39,720.78 : x
  2. Step 2: Convert to fraction form
    106,263.90/159,395.04 = 39,720.78/x
  3. Step 3: Cross multiply
    106,263.90x = 159,395.04 × 39,720.78
  4. Step 4: Simplify right side
    106,263.90x = 6,331,295,316.93
  5. Step 5: Solve for x
    x = 6,331,295,316.93/106,263.90
  6. Step 6: Final answer
    x = 59,580.87

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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.