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Finding the Fourth Proportional to 120,860.60, 166,779.18 and 69,833.30

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Solution

The fourth proportional to 120,860.60, 166,779.18 and 69,833.30 is: 96,365.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,860.60 : 166,779.18 = 69,833.30 : x
  2. Step 2: Convert to fraction form
    120,860.60/166,779.18 = 69,833.30/x
  3. Step 3: Cross multiply
    120,860.60x = 166,779.18 × 69,833.30
  4. Step 4: Simplify right side
    120,860.60x = 11,646,740,510.69
  5. Step 5: Solve for x
    x = 11,646,740,510.69/120,860.60
  6. Step 6: Final answer
    x = 96,365.07

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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.