Home / 121,839.85-168,071.47-70,846.97

Finding the Fourth Proportional to 121,839.85, 168,071.47 and 70,846.97

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Solution

The fourth proportional to 121,839.85, 168,071.47 and 70,846.97 is: 97,729.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,839.85 : 168,071.47 = 70,846.97 : x
  2. Step 2: Convert to fraction form
    121,839.85/168,071.47 = 70,846.97/x
  3. Step 3: Cross multiply
    121,839.85x = 168,071.47 × 70,846.97
  4. Step 4: Simplify right side
    121,839.85x = 11,907,353,375.47
  5. Step 5: Solve for x
    x = 11,907,353,375.47/121,839.85
  6. Step 6: Final answer
    x = 97,729.55

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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.