Home / 189,137.92-261,006.78-103,097.72

Finding the Fourth Proportional to 189,137.92, 261,006.78 and 103,097.72

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Solution

The fourth proportional to 189,137.92, 261,006.78 and 103,097.72 is: 142,272.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,137.92 : 261,006.78 = 103,097.72 : x
  2. Step 2: Convert to fraction form
    189,137.92/261,006.78 = 103,097.72/x
  3. Step 3: Cross multiply
    189,137.92x = 261,006.78 × 103,097.72
  4. Step 4: Simplify right side
    189,137.92x = 26,909,203,922.54
  5. Step 5: Solve for x
    x = 26,909,203,922.54/189,137.92
  6. Step 6: Final answer
    x = 142,272.92

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1.5x scale

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.