Home / 127,455.15-191,170.31-38,709.39

Finding the Fourth Proportional to 127,455.15, 191,170.31 and 38,709.39

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Solution

The fourth proportional to 127,455.15, 191,170.31 and 38,709.39 is: 58,060.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,455.15 : 191,170.31 = 38,709.39 : x
  2. Step 2: Convert to fraction form
    127,455.15/191,170.31 = 38,709.39/x
  3. Step 3: Cross multiply
    127,455.15x = 191,170.31 × 38,709.39
  4. Step 4: Simplify right side
    127,455.15x = 7,400,085,892.66
  5. Step 5: Solve for x
    x = 7,400,085,892.66/127,455.15
  6. Step 6: Final answer
    x = 58,060.31

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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.