Home / 127,406.20-191,109.30-57,422.20

Finding the Fourth Proportional to 127,406.20, 191,109.30 and 57,422.20

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Solution

The fourth proportional to 127,406.20, 191,109.30 and 57,422.20 is: 86,133.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,406.20 : 191,109.30 = 57,422.20 : x
  2. Step 2: Convert to fraction form
    127,406.20/191,109.30 = 57,422.20/x
  3. Step 3: Cross multiply
    127,406.20x = 191,109.30 × 57,422.20
  4. Step 4: Simplify right side
    127,406.20x = 10,973,916,446.46
  5. Step 5: Solve for x
    x = 10,973,916,446.46/127,406.20
  6. Step 6: Final answer
    x = 86,133.30

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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.