Home / 121,390.72-167,519.30-67,674.66

Finding the Fourth Proportional to 121,390.72, 167,519.30 and 67,674.66

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Solution

The fourth proportional to 121,390.72, 167,519.30 and 67,674.66 is: 93,391.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,390.72 : 167,519.30 = 67,674.66 : x
  2. Step 2: Convert to fraction form
    121,390.72/167,519.30 = 67,674.66/x
  3. Step 3: Cross multiply
    121,390.72x = 167,519.30 × 67,674.66
  4. Step 4: Simplify right side
    121,390.72x = 11,336,811,670.94
  5. Step 5: Solve for x
    x = 11,336,811,670.94/121,390.72
  6. Step 6: Final answer
    x = 93,391.09

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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.