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Finding the Fourth Proportional to 162,449.36, 243,729.36 and 87,576.74

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Solution

The fourth proportional to 162,449.36, 243,729.36 and 87,576.74 is: 131,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,449.36 : 243,729.36 = 87,576.74 : x
  2. Step 2: Convert to fraction form
    162,449.36/243,729.36 = 87,576.74/x
  3. Step 3: Cross multiply
    162,449.36x = 243,729.36 × 87,576.74
  4. Step 4: Simplify right side
    162,449.36x = 21,345,022,791.09
  5. Step 5: Solve for x
    x = 21,345,022,791.09/162,449.36
  6. Step 6: Final answer
    x = 131,394.93

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1.5x scale

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.