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Finding the Fourth Proportional to 131,699.39, 181,696.23 and 86,402.57

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Solution

The fourth proportional to 131,699.39, 181,696.23 and 86,402.57 is: 119,203.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,699.39 : 181,696.23 = 86,402.57 : x
  2. Step 2: Convert to fraction form
    131,699.39/181,696.23 = 86,402.57/x
  3. Step 3: Cross multiply
    131,699.39x = 181,696.23 × 86,402.57
  4. Step 4: Simplify right side
    131,699.39x = 15,699,020,322.83
  5. Step 5: Solve for x
    x = 15,699,020,322.83/131,699.39
  6. Step 6: Final answer
    x = 119,203.44

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