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Finding the Fourth Proportional to 139,716.36, 208,501.11 and 124,769.16

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Solution

The fourth proportional to 139,716.36, 208,501.11 and 124,769.16 is: 186,195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,716.36 : 208,501.11 = 124,769.16 : x
  2. Step 2: Convert to fraction form
    139,716.36/208,501.11 = 124,769.16/x
  3. Step 3: Cross multiply
    139,716.36x = 208,501.11 × 124,769.16
  4. Step 4: Simplify right side
    139,716.36x = 26,014,508,353.77
  5. Step 5: Solve for x
    x = 26,014,508,353.77/139,716.36
  6. Step 6: Final answer
    x = 186,195.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.