Home / 121,379.10-167,564.88-76,083.90

Finding the Fourth Proportional to 121,379.10, 167,564.88 and 76,083.90

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Solution

The fourth proportional to 121,379.10, 167,564.88 and 76,083.90 is: 105,034.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,379.10 : 167,564.88 = 76,083.90 : x
  2. Step 2: Convert to fraction form
    121,379.10/167,564.88 = 76,083.90/x
  3. Step 3: Cross multiply
    121,379.10x = 167,564.88 × 76,083.90
  4. Step 4: Simplify right side
    121,379.10x = 12,748,989,573.43
  5. Step 5: Solve for x
    x = 12,748,989,573.43/121,379.10
  6. Step 6: Final answer
    x = 105,034.47

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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.