Home / 127,140.80-190,712.64-38,395.04

Finding the Fourth Proportional to 127,140.80, 190,712.64 and 38,395.04

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Solution

The fourth proportional to 127,140.80, 190,712.64 and 38,395.04 is: 57,592.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,140.80 : 190,712.64 = 38,395.04 : x
  2. Step 2: Convert to fraction form
    127,140.80/190,712.64 = 38,395.04/x
  3. Step 3: Cross multiply
    127,140.80x = 190,712.64 × 38,395.04
  4. Step 4: Simplify right side
    127,140.80x = 7,322,419,441.31
  5. Step 5: Solve for x
    x = 7,322,419,441.31/127,140.80
  6. Step 6: Final answer
    x = 57,592.99

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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.