Home / 121,404.06-167,564.44-78,888.78

Finding the Fourth Proportional to 121,404.06, 167,564.44 and 78,888.78

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Solution

The fourth proportional to 121,404.06, 167,564.44 and 78,888.78 is: 108,883.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,404.06 : 167,564.44 = 78,888.78 : x
  2. Step 2: Convert to fraction form
    121,404.06/167,564.44 = 78,888.78/x
  3. Step 3: Cross multiply
    121,404.06x = 167,564.44 × 78,888.78
  4. Step 4: Simplify right side
    121,404.06x = 13,218,954,242.98
  5. Step 5: Solve for x
    x = 13,218,954,242.98/121,404.06
  6. Step 6: Final answer
    x = 108,883.96

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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.