Home / 126,465.28-189,708.64-51,590.50

Finding the Fourth Proportional to 126,465.28, 189,708.64 and 51,590.50

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Solution

The fourth proportional to 126,465.28, 189,708.64 and 51,590.50 is: 77,390.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,465.28 : 189,708.64 = 51,590.50 : x
  2. Step 2: Convert to fraction form
    126,465.28/189,708.64 = 51,590.50/x
  3. Step 3: Cross multiply
    126,465.28x = 189,708.64 × 51,590.50
  4. Step 4: Simplify right side
    126,465.28x = 9,787,163,591.92
  5. Step 5: Solve for x
    x = 9,787,163,591.92/126,465.28
  6. Step 6: Final answer
    x = 77,390.12

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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.