Home / 138,767.86-191,499.64-75,105.66

Finding the Fourth Proportional to 138,767.86, 191,499.64 and 75,105.66

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Solution

The fourth proportional to 138,767.86, 191,499.64 and 75,105.66 is: 103,645.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,767.86 : 191,499.64 = 75,105.66 : x
  2. Step 2: Convert to fraction form
    138,767.86/191,499.64 = 75,105.66/x
  3. Step 3: Cross multiply
    138,767.86x = 191,499.64 × 75,105.66
  4. Step 4: Simplify right side
    138,767.86x = 14,382,706,851.96
  5. Step 5: Solve for x
    x = 14,382,706,851.96/138,767.86
  6. Step 6: Final answer
    x = 103,645.81

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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.