Home / 106,821.36-160,091.88-78,609.36

Finding the Fourth Proportional to 106,821.36, 160,091.88 and 78,609.36

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Solution

The fourth proportional to 106,821.36, 160,091.88 and 78,609.36 is: 117,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,821.36 : 160,091.88 = 78,609.36 : x
  2. Step 2: Convert to fraction form
    106,821.36/160,091.88 = 78,609.36/x
  3. Step 3: Cross multiply
    106,821.36x = 160,091.88 × 78,609.36
  4. Step 4: Simplify right side
    106,821.36x = 12,584,720,228.00
  5. Step 5: Solve for x
    x = 12,584,720,228.00/106,821.36
  6. Step 6: Final answer
    x = 117,810.90

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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.