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Finding the Fourth Proportional to 121,473, 167,624.64 and 69,791.76

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Solution

The fourth proportional to 121,473, 167,624.64 and 69,791.76 is: 96,307.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,473 : 167,624.64 = 69,791.76 : x
  2. Step 2: Convert to fraction form
    121,473/167,624.64 = 69,791.76/x
  3. Step 3: Cross multiply
    121,473x = 167,624.64 × 69,791.76
  4. Step 4: Simplify right side
    121,473x = 11,698,818,644.97
  5. Step 5: Solve for x
    x = 11,698,818,644.97/121,473
  6. Step 6: Final answer
    x = 96,307.97

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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.