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Finding the Fourth Proportional to 138,703.46, 191,606.73 and 110,372.90

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Solution

The fourth proportional to 138,703.46, 191,606.73 and 110,372.90 is: 152,470.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,703.46 : 191,606.73 = 110,372.90 : x
  2. Step 2: Convert to fraction form
    138,703.46/191,606.73 = 110,372.90/x
  3. Step 3: Cross multiply
    138,703.46x = 191,606.73 × 110,372.90
  4. Step 4: Simplify right side
    138,703.46x = 21,148,190,449.62
  5. Step 5: Solve for x
    x = 21,148,190,449.62/138,703.46
  6. Step 6: Final answer
    x = 152,470.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.