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Finding the Fourth Proportional to 121,421.44, 167,548.80 and 67,696.30

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Solution

The fourth proportional to 121,421.44, 167,548.80 and 67,696.30 is: 93,413.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,421.44 : 167,548.80 = 67,696.30 : x
  2. Step 2: Convert to fraction form
    121,421.44/167,548.80 = 67,696.30/x
  3. Step 3: Cross multiply
    121,421.44x = 167,548.80 × 67,696.30
  4. Step 4: Simplify right side
    121,421.44x = 11,342,433,829.44
  5. Step 5: Solve for x
    x = 11,342,433,829.44/121,421.44
  6. Step 6: Final answer
    x = 93,413.76

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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.