Home / 127,816.20-191,505.60-81,014.40

Finding the Fourth Proportional to 127,816.20, 191,505.60 and 81,014.40

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Solution

The fourth proportional to 127,816.20, 191,505.60 and 81,014.40 is: 121,382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,816.20 : 191,505.60 = 81,014.40 : x
  2. Step 2: Convert to fraction form
    127,816.20/191,505.60 = 81,014.40/x
  3. Step 3: Cross multiply
    127,816.20x = 191,505.60 × 81,014.40
  4. Step 4: Simplify right side
    127,816.20x = 15,514,711,280.64
  5. Step 5: Solve for x
    x = 15,514,711,280.64/127,816.20
  6. Step 6: Final answer
    x = 121,382.98

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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.