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Finding the Fourth Proportional to 134,691, 185,881.41 and 74,274.50

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Solution

The fourth proportional to 134,691, 185,881.41 and 74,274.50 is: 102,503.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,691 : 185,881.41 = 74,274.50 : x
  2. Step 2: Convert to fraction form
    134,691/185,881.41 = 74,274.50/x
  3. Step 3: Cross multiply
    134,691x = 185,881.41 × 74,274.50
  4. Step 4: Simplify right side
    134,691x = 13,806,247,857.64
  5. Step 5: Solve for x
    x = 13,806,247,857.64/134,691
  6. Step 6: Final answer
    x = 102,503.12

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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.