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Finding the Fourth Proportional to 121,266, 167,347.08 and 70,974.72

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Solution

The fourth proportional to 121,266, 167,347.08 and 70,974.72 is: 97,945.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,266 : 167,347.08 = 70,974.72 : x
  2. Step 2: Convert to fraction form
    121,266/167,347.08 = 70,974.72/x
  3. Step 3: Cross multiply
    121,266x = 167,347.08 × 70,974.72
  4. Step 4: Simplify right side
    121,266x = 11,877,412,145.82
  5. Step 5: Solve for x
    x = 11,877,412,145.82/121,266
  6. Step 6: Final answer
    x = 97,945.11

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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.