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Finding the Fourth Proportional to 84,181.68, 126,144.84 and 61,888.92

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Solution

The fourth proportional to 84,181.68, 126,144.84 and 61,888.92 is: 92,739.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,181.68 : 126,144.84 = 61,888.92 : x
  2. Step 2: Convert to fraction form
    84,181.68/126,144.84 = 61,888.92/x
  3. Step 3: Cross multiply
    84,181.68x = 126,144.84 × 61,888.92
  4. Step 4: Simplify right side
    84,181.68x = 7,806,967,911.17
  5. Step 5: Solve for x
    x = 7,806,967,911.17/84,181.68
  6. Step 6: Final answer
    x = 92,739.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.