Home / 121,094.11-167,147-78,073.66

Finding the Fourth Proportional to 121,094.11, 167,147 and 78,073.66

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Solution

The fourth proportional to 121,094.11, 167,147 and 78,073.66 is: 107,765.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,094.11 : 167,147 = 78,073.66 : x
  2. Step 2: Convert to fraction form
    121,094.11/167,147 = 78,073.66/x
  3. Step 3: Cross multiply
    121,094.11x = 167,147 × 78,073.66
  4. Step 4: Simplify right side
    121,094.11x = 13,049,778,048.02
  5. Step 5: Solve for x
    x = 13,049,778,048.02/121,094.11
  6. Step 6: Final answer
    x = 107,765.59

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1.5x scale

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.