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Finding the Fourth Proportional to 127,129.32, 190,695.32 and 38,383.56

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Solution

The fourth proportional to 127,129.32, 190,695.32 and 38,383.56 is: 57,575.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,129.32 : 190,695.32 = 38,383.56 : x
  2. Step 2: Convert to fraction form
    127,129.32/190,695.32 = 38,383.56/x
  3. Step 3: Cross multiply
    127,129.32x = 190,695.32 × 38,383.56
  4. Step 4: Simplify right side
    127,129.32x = 7,319,565,256.94
  5. Step 5: Solve for x
    x = 7,319,565,256.94/127,129.32
  6. Step 6: Final answer
    x = 57,575.74

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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.