Home / 126,438.12-189,657.14-70,251.30

Finding the Fourth Proportional to 126,438.12, 189,657.14 and 70,251.30

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Solution

The fourth proportional to 126,438.12, 189,657.14 and 70,251.30 is: 105,376.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,438.12 : 189,657.14 = 70,251.30 : x
  2. Step 2: Convert to fraction form
    126,438.12/189,657.14 = 70,251.30/x
  3. Step 3: Cross multiply
    126,438.12x = 189,657.14 × 70,251.30
  4. Step 4: Simplify right side
    126,438.12x = 13,323,660,288.03
  5. Step 5: Solve for x
    x = 13,323,660,288.03/126,438.12
  6. Step 6: Final answer
    x = 105,376.92

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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.