Home / 121,290.34-167,450.13-81,072.22

Finding the Fourth Proportional to 121,290.34, 167,450.13 and 81,072.22

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Solution

The fourth proportional to 121,290.34, 167,450.13 and 81,072.22 is: 111,926.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,290.34 : 167,450.13 = 81,072.22 : x
  2. Step 2: Convert to fraction form
    121,290.34/167,450.13 = 81,072.22/x
  3. Step 3: Cross multiply
    121,290.34x = 167,450.13 × 81,072.22
  4. Step 4: Simplify right side
    121,290.34x = 13,575,553,778.39
  5. Step 5: Solve for x
    x = 13,575,553,778.39/121,290.34
  6. Step 6: Final answer
    x = 111,926.09

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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.