Home / 127,785.04-191,677.56-80,939.50

Finding the Fourth Proportional to 127,785.04, 191,677.56 and 80,939.50

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Solution

The fourth proportional to 127,785.04, 191,677.56 and 80,939.50 is: 121,409.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,785.04 : 191,677.56 = 80,939.50 : x
  2. Step 2: Convert to fraction form
    127,785.04/191,677.56 = 80,939.50/x
  3. Step 3: Cross multiply
    127,785.04x = 191,677.56 × 80,939.50
  4. Step 4: Simplify right side
    127,785.04x = 15,514,285,867.62
  5. Step 5: Solve for x
    x = 15,514,285,867.62/127,785.04
  6. Step 6: Final answer
    x = 121,409.25

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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.