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Finding the Fourth Proportional to 159,686.90, 239,580.90 and 47,367.56

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Solution

The fourth proportional to 159,686.90, 239,580.90 and 47,367.56 is: 71,066.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,686.90 : 239,580.90 = 47,367.56 : x
  2. Step 2: Convert to fraction form
    159,686.90/239,580.90 = 47,367.56/x
  3. Step 3: Cross multiply
    159,686.90x = 239,580.90 × 47,367.56
  4. Step 4: Simplify right side
    159,686.90x = 11,348,362,655.60
  5. Step 5: Solve for x
    x = 11,348,362,655.60/159,686.90
  6. Step 6: Final answer
    x = 71,066.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.