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Finding the Fourth Proportional to 127,866.32, 191,792.49 and 39,119.82

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Solution

The fourth proportional to 127,866.32, 191,792.49 and 39,119.82 is: 58,677.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,866.32 : 191,792.49 = 39,119.82 : x
  2. Step 2: Convert to fraction form
    127,866.32/191,792.49 = 39,119.82/x
  3. Step 3: Cross multiply
    127,866.32x = 191,792.49 × 39,119.82
  4. Step 4: Simplify right side
    127,866.32x = 7,502,887,686.15
  5. Step 5: Solve for x
    x = 7,502,887,686.15/127,866.32
  6. Step 6: Final answer
    x = 58,677.59

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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.