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Finding the Fourth Proportional to 135,395.65, 186,851.84 and 74,966.29

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Solution

The fourth proportional to 135,395.65, 186,851.84 and 74,966.29 is: 103,456.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,395.65 : 186,851.84 = 74,966.29 : x
  2. Step 2: Convert to fraction form
    135,395.65/186,851.84 = 74,966.29/x
  3. Step 3: Cross multiply
    135,395.65x = 186,851.84 × 74,966.29
  4. Step 4: Simplify right side
    135,395.65x = 14,007,588,382.51
  5. Step 5: Solve for x
    x = 14,007,588,382.51/135,395.65
  6. Step 6: Final answer
    x = 103,456.71

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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.