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Finding the Fourth Proportional to 131,900.68, 181,862.58 and 91,647.88

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Solution

The fourth proportional to 131,900.68, 181,862.58 and 91,647.88 is: 126,362.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,900.68 : 181,862.58 = 91,647.88 : x
  2. Step 2: Convert to fraction form
    131,900.68/181,862.58 = 91,647.88/x
  3. Step 3: Cross multiply
    131,900.68x = 181,862.58 × 91,647.88
  4. Step 4: Simplify right side
    131,900.68x = 16,667,319,908.33
  5. Step 5: Solve for x
    x = 16,667,319,908.33/131,900.68
  6. Step 6: Final answer
    x = 126,362.65

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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.