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Finding the Fourth Proportional to 120,482.39, 166,264.37 and 66,035

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Solution

The fourth proportional to 120,482.39, 166,264.37 and 66,035 is: 91,127.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,482.39 : 166,264.37 = 66,035 : x
  2. Step 2: Convert to fraction form
    120,482.39/166,264.37 = 66,035/x
  3. Step 3: Cross multiply
    120,482.39x = 166,264.37 × 66,035
  4. Step 4: Simplify right side
    120,482.39x = 10,979,267,672.95
  5. Step 5: Solve for x
    x = 10,979,267,672.95/120,482.39
  6. Step 6: Final answer
    x = 91,127.57

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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.