Home / 189,815.76-285,240.96-101,132.64

Finding the Fourth Proportional to 189,815.76, 285,240.96 and 101,132.64

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Solution

The fourth proportional to 189,815.76, 285,240.96 and 101,132.64 is: 151,974.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,815.76 : 285,240.96 = 101,132.64 : x
  2. Step 2: Convert to fraction form
    189,815.76/285,240.96 = 101,132.64/x
  3. Step 3: Cross multiply
    189,815.76x = 285,240.96 × 101,132.64
  4. Step 4: Simplify right side
    189,815.76x = 28,847,171,320.93
  5. Step 5: Solve for x
    x = 28,847,171,320.93/189,815.76
  6. Step 6: Final answer
    x = 151,974.58

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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.