Home / 126,429.70-189,644.55-64,221.70

Finding the Fourth Proportional to 126,429.70, 189,644.55 and 64,221.70

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Solution

The fourth proportional to 126,429.70, 189,644.55 and 64,221.70 is: 96,332.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,429.70 : 189,644.55 = 64,221.70 : x
  2. Step 2: Convert to fraction form
    126,429.70/189,644.55 = 64,221.70/x
  3. Step 3: Cross multiply
    126,429.70x = 189,644.55 × 64,221.70
  4. Step 4: Simplify right side
    126,429.70x = 12,179,295,396.74
  5. Step 5: Solve for x
    x = 12,179,295,396.74/126,429.70
  6. Step 6: Final answer
    x = 96,332.55

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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.