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Finding the Fourth Proportional to 121,172.94, 167,205.51 and 67,453.74

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Solution

The fourth proportional to 121,172.94, 167,205.51 and 67,453.74 is: 93,078.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,172.94 : 167,205.51 = 67,453.74 : x
  2. Step 2: Convert to fraction form
    121,172.94/167,205.51 = 67,453.74/x
  3. Step 3: Cross multiply
    121,172.94x = 167,205.51 × 67,453.74
  4. Step 4: Simplify right side
    121,172.94x = 11,278,636,998.11
  5. Step 5: Solve for x
    x = 11,278,636,998.11/121,172.94
  6. Step 6: Final answer
    x = 93,078.84

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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.