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Finding the Fourth Proportional to 159,788.94, 220,501.35 and 91,758.06

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Solution

The fourth proportional to 159,788.94, 220,501.35 and 91,758.06 is: 126,621.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,788.94 : 220,501.35 = 91,758.06 : x
  2. Step 2: Convert to fraction form
    159,788.94/220,501.35 = 91,758.06/x
  3. Step 3: Cross multiply
    159,788.94x = 220,501.35 × 91,758.06
  4. Step 4: Simplify right side
    159,788.94x = 20,232,776,103.38
  5. Step 5: Solve for x
    x = 20,232,776,103.38/159,788.94
  6. Step 6: Final answer
    x = 126,621.88

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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.