Home / 121,577.38-167,779.42-67,129.36

Finding the Fourth Proportional to 121,577.38, 167,779.42 and 67,129.36

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Solution

The fourth proportional to 121,577.38, 167,779.42 and 67,129.36 is: 92,639.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,577.38 : 167,779.42 = 67,129.36 : x
  2. Step 2: Convert to fraction form
    121,577.38/167,779.42 = 67,129.36/x
  3. Step 3: Cross multiply
    121,577.38x = 167,779.42 × 67,129.36
  4. Step 4: Simplify right side
    121,577.38x = 11,262,924,498.50
  5. Step 5: Solve for x
    x = 11,262,924,498.50/121,577.38
  6. Step 6: Final answer
    x = 92,639.97

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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.