Home / 121,401.66-167,474.75-81,125.33

Finding the Fourth Proportional to 121,401.66, 167,474.75 and 81,125.33

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Solution

The fourth proportional to 121,401.66, 167,474.75 and 81,125.33 is: 111,913.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,401.66 : 167,474.75 = 81,125.33 : x
  2. Step 2: Convert to fraction form
    121,401.66/167,474.75 = 81,125.33/x
  3. Step 3: Cross multiply
    121,401.66x = 167,474.75 × 81,125.33
  4. Step 4: Simplify right side
    121,401.66x = 13,586,443,117.42
  5. Step 5: Solve for x
    x = 13,586,443,117.42/121,401.66
  6. Step 6: Final answer
    x = 111,913.16

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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.