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Finding the Fourth Proportional to 135,038.79, 186,364.44 and 74,614.73

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Solution

The fourth proportional to 135,038.79, 186,364.44 and 74,614.73 is: 102,974.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,038.79 : 186,364.44 = 74,614.73 : x
  2. Step 2: Convert to fraction form
    135,038.79/186,364.44 = 74,614.73/x
  3. Step 3: Cross multiply
    135,038.79x = 186,364.44 × 74,614.73
  4. Step 4: Simplify right side
    135,038.79x = 13,905,531,440.38
  5. Step 5: Solve for x
    x = 13,905,531,440.38/135,038.79
  6. Step 6: Final answer
    x = 102,974.35

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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.