Home / 126,001.20-189,293.40-86,635.20

Finding the Fourth Proportional to 126,001.20, 189,293.40 and 86,635.20

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Solution

The fourth proportional to 126,001.20, 189,293.40 and 86,635.20 is: 130,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,001.20 : 189,293.40 = 86,635.20 : x
  2. Step 2: Convert to fraction form
    126,001.20/189,293.40 = 86,635.20/x
  3. Step 3: Cross multiply
    126,001.20x = 189,293.40 × 86,635.20
  4. Step 4: Simplify right side
    126,001.20x = 16,399,471,567.68
  5. Step 5: Solve for x
    x = 16,399,471,567.68/126,001.20
  6. Step 6: Final answer
    x = 130,153.30

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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.