Home / 127,256.38-190,887-38,509.54

Finding the Fourth Proportional to 127,256.38, 190,887 and 38,509.54

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Solution

The fourth proportional to 127,256.38, 190,887 and 38,509.54 is: 57,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,256.38 : 190,887 = 38,509.54 : x
  2. Step 2: Convert to fraction form
    127,256.38/190,887 = 38,509.54/x
  3. Step 3: Cross multiply
    127,256.38x = 190,887 × 38,509.54
  4. Step 4: Simplify right side
    127,256.38x = 7,350,970,561.98
  5. Step 5: Solve for x
    x = 7,350,970,561.98/127,256.38
  6. Step 6: Final answer
    x = 57,765.05

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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.