Home / 126,710.40-189,835.20-103,209.60

Finding the Fourth Proportional to 126,710.40, 189,835.20 and 103,209.60

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Solution

The fourth proportional to 126,710.40, 189,835.20 and 103,209.60 is: 154,626.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,710.40 : 189,835.20 = 103,209.60 : x
  2. Step 2: Convert to fraction form
    126,710.40/189,835.20 = 103,209.60/x
  3. Step 3: Cross multiply
    126,710.40x = 189,835.20 × 103,209.60
  4. Step 4: Simplify right side
    126,710.40x = 19,592,815,057.92
  5. Step 5: Solve for x
    x = 19,592,815,057.92/126,710.40
  6. Step 6: Final answer
    x = 154,626.73

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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.