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Finding the Fourth Proportional to 121,605.36, 167,794.92 and 67,888.32

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Solution

The fourth proportional to 121,605.36, 167,794.92 and 67,888.32 is: 93,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,605.36 : 167,794.92 = 67,888.32 : x
  2. Step 2: Convert to fraction form
    121,605.36/167,794.92 = 67,888.32/x
  3. Step 3: Cross multiply
    121,605.36x = 167,794.92 × 67,888.32
  4. Step 4: Simplify right side
    121,605.36x = 11,391,315,223.33
  5. Step 5: Solve for x
    x = 11,391,315,223.33/121,605.36
  6. Step 6: Final answer
    x = 93,674.45

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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.