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Finding the Fourth Proportional to 121,329.69, 167,447.51 and 72,947.44

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Solution

The fourth proportional to 121,329.69, 167,447.51 and 72,947.44 is: 100,675.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,329.69 : 167,447.51 = 72,947.44 : x
  2. Step 2: Convert to fraction form
    121,329.69/167,447.51 = 72,947.44/x
  3. Step 3: Cross multiply
    121,329.69x = 167,447.51 × 72,947.44
  4. Step 4: Simplify right side
    121,329.69x = 12,214,867,188.87
  5. Step 5: Solve for x
    x = 12,214,867,188.87/121,329.69
  6. Step 6: Final answer
    x = 100,675.01

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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.