Home / 121,440.39-167,587.89-66,991.33

Finding the Fourth Proportional to 121,440.39, 167,587.89 and 66,991.33

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Solution

The fourth proportional to 121,440.39, 167,587.89 and 66,991.33 is: 92,448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,440.39 : 167,587.89 = 66,991.33 : x
  2. Step 2: Convert to fraction form
    121,440.39/167,587.89 = 66,991.33/x
  3. Step 3: Cross multiply
    121,440.39x = 167,587.89 × 66,991.33
  4. Step 4: Simplify right side
    121,440.39x = 11,226,934,805.05
  5. Step 5: Solve for x
    x = 11,226,934,805.05/121,440.39
  6. Step 6: Final answer
    x = 92,448.12

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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.