Home / 126,065.20-188,838.60-86,666.80

Finding the Fourth Proportional to 126,065.20, 188,838.60 and 86,666.80

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Solution

The fourth proportional to 126,065.20, 188,838.60 and 86,666.80 is: 129,822.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,065.20 : 188,838.60 = 86,666.80 : x
  2. Step 2: Convert to fraction form
    126,065.20/188,838.60 = 86,666.80/x
  3. Step 3: Cross multiply
    126,065.20x = 188,838.60 × 86,666.80
  4. Step 4: Simplify right side
    126,065.20x = 16,366,037,178.48
  5. Step 5: Solve for x
    x = 16,366,037,178.48/126,065.20
  6. Step 6: Final answer
    x = 129,822.01

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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.