Home / 127,811.20-191,716.80-34,326.40

Finding the Fourth Proportional to 127,811.20, 191,716.80 and 34,326.40

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Solution

The fourth proportional to 127,811.20, 191,716.80 and 34,326.40 is: 51,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,811.20 : 191,716.80 = 34,326.40 : x
  2. Step 2: Convert to fraction form
    127,811.20/191,716.80 = 34,326.40/x
  3. Step 3: Cross multiply
    127,811.20x = 191,716.80 × 34,326.40
  4. Step 4: Simplify right side
    127,811.20x = 6,580,947,563.52
  5. Step 5: Solve for x
    x = 6,580,947,563.52/127,811.20
  6. Step 6: Final answer
    x = 51,489.60

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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.