Home / 138,845.81-191,607.32-75,183.66

Finding the Fourth Proportional to 138,845.81, 191,607.32 and 75,183.66

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Solution

The fourth proportional to 138,845.81, 191,607.32 and 75,183.66 is: 103,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,845.81 : 191,607.32 = 75,183.66 : x
  2. Step 2: Convert to fraction form
    138,845.81/191,607.32 = 75,183.66/x
  3. Step 3: Cross multiply
    138,845.81x = 191,607.32 × 75,183.66
  4. Step 4: Simplify right side
    138,845.81x = 14,405,739,788.35
  5. Step 5: Solve for x
    x = 14,405,739,788.35/138,845.81
  6. Step 6: Final answer
    x = 103,753.51

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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.