Home / 138,769.09-191,499.26-77,516.12

Finding the Fourth Proportional to 138,769.09, 191,499.26 and 77,516.12

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Solution

The fourth proportional to 138,769.09, 191,499.26 and 77,516.12 is: 106,971.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,769.09 : 191,499.26 = 77,516.12 : x
  2. Step 2: Convert to fraction form
    138,769.09/191,499.26 = 77,516.12/x
  3. Step 3: Cross multiply
    138,769.09x = 191,499.26 × 77,516.12
  4. Step 4: Simplify right side
    138,769.09x = 14,844,279,709.24
  5. Step 5: Solve for x
    x = 14,844,279,709.24/138,769.09
  6. Step 6: Final answer
    x = 106,971.08

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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.