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Finding the Fourth Proportional to 135,169.53, 186,547.56 and 74,744.73

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Solution

The fourth proportional to 135,169.53, 186,547.56 and 74,744.73 is: 103,155.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,169.53 : 186,547.56 = 74,744.73 : x
  2. Step 2: Convert to fraction form
    135,169.53/186,547.56 = 74,744.73/x
  3. Step 3: Cross multiply
    135,169.53x = 186,547.56 × 74,744.73
  4. Step 4: Simplify right side
    135,169.53x = 13,943,447,004.36
  5. Step 5: Solve for x
    x = 13,943,447,004.36/135,169.53
  6. Step 6: Final answer
    x = 103,155.25

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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.