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Finding the Fourth Proportional to 120,870.59, 166,791.66 and 69,886.62

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Solution

The fourth proportional to 120,870.59, 166,791.66 and 69,886.62 is: 96,437.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,870.59 : 166,791.66 = 69,886.62 : x
  2. Step 2: Convert to fraction form
    120,870.59/166,791.66 = 69,886.62/x
  3. Step 3: Cross multiply
    120,870.59x = 166,791.66 × 69,886.62
  4. Step 4: Simplify right side
    120,870.59x = 11,656,505,099.51
  5. Step 5: Solve for x
    x = 11,656,505,099.51/120,870.59
  6. Step 6: Final answer
    x = 96,437.90

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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.