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Finding the Fourth Proportional to 135,300.53, 186,724.07 and 74,873.72

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Solution

The fourth proportional to 135,300.53, 186,724.07 and 74,873.72 is: 103,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,300.53 : 186,724.07 = 74,873.72 : x
  2. Step 2: Convert to fraction form
    135,300.53/186,724.07 = 74,873.72/x
  3. Step 3: Cross multiply
    135,300.53x = 186,724.07 × 74,873.72
  4. Step 4: Simplify right side
    135,300.53x = 13,980,724,426.45
  5. Step 5: Solve for x
    x = 13,980,724,426.45/135,300.53
  6. Step 6: Final answer
    x = 103,330.90

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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.