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Finding the Fourth Proportional to 121,654.19, 167,858.43 and 67,930.94

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Solution

The fourth proportional to 121,654.19, 167,858.43 and 67,930.94 is: 93,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,654.19 : 167,858.43 = 67,930.94 : x
  2. Step 2: Convert to fraction form
    121,654.19/167,858.43 = 67,930.94/x
  3. Step 3: Cross multiply
    121,654.19x = 167,858.43 × 67,930.94
  4. Step 4: Simplify right side
    121,654.19x = 11,402,780,854.37
  5. Step 5: Solve for x
    x = 11,402,780,854.37/121,654.19
  6. Step 6: Final answer
    x = 93,731.10

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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.