Home / 121,801.10-168,084.36-67,355.65

Finding the Fourth Proportional to 121,801.10, 168,084.36 and 67,355.65

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Solution

The fourth proportional to 121,801.10, 168,084.36 and 67,355.65 is: 92,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,801.10 : 168,084.36 = 67,355.65 : x
  2. Step 2: Convert to fraction form
    121,801.10/168,084.36 = 67,355.65/x
  3. Step 3: Cross multiply
    121,801.10x = 168,084.36 × 67,355.65
  4. Step 4: Simplify right side
    121,801.10x = 11,321,431,299.62
  5. Step 5: Solve for x
    x = 11,321,431,299.62/121,801.10
  6. Step 6: Final answer
    x = 92,950.15

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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.