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Finding the Fourth Proportional to 121,365.39, 167,486.43 and 67,644.64

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Solution

The fourth proportional to 121,365.39, 167,486.43 and 67,644.64 is: 93,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,365.39 : 167,486.43 = 67,644.64 : x
  2. Step 2: Convert to fraction form
    121,365.39/167,486.43 = 67,644.64/x
  3. Step 3: Cross multiply
    121,365.39x = 167,486.43 × 67,644.64
  4. Step 4: Simplify right side
    121,365.39x = 11,329,559,262.24
  5. Step 5: Solve for x
    x = 11,329,559,262.24/121,365.39
  6. Step 6: Final answer
    x = 93,350.82

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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.