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Finding the Fourth Proportional to 160,635.40, 241,074.30 and 81,815.72

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Solution

The fourth proportional to 160,635.40, 241,074.30 and 81,815.72 is: 122,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,635.40 : 241,074.30 = 81,815.72 : x
  2. Step 2: Convert to fraction form
    160,635.40/241,074.30 = 81,815.72/x
  3. Step 3: Cross multiply
    160,635.40x = 241,074.30 × 81,815.72
  4. Step 4: Simplify right side
    160,635.40x = 19,723,667,428.00
  5. Step 5: Solve for x
    x = 19,723,667,428.00/160,635.40
  6. Step 6: Final answer
    x = 122,785.31

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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.