Home / 126,152.18-189,228.28-86,589.36

Finding the Fourth Proportional to 126,152.18, 189,228.28 and 86,589.36

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Solution

The fourth proportional to 126,152.18, 189,228.28 and 86,589.36 is: 129,884.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,152.18 : 189,228.28 = 86,589.36 : x
  2. Step 2: Convert to fraction form
    126,152.18/189,228.28 = 86,589.36/x
  3. Step 3: Cross multiply
    126,152.18x = 189,228.28 × 86,589.36
  4. Step 4: Simplify right side
    126,152.18x = 16,385,155,659.10
  5. Step 5: Solve for x
    x = 16,385,155,659.10/126,152.18
  6. Step 6: Final answer
    x = 129,884.05

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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.