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Finding the Fourth Proportional to 147,166.60, 220,749.90 and 77,067.40

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Solution

The fourth proportional to 147,166.60, 220,749.90 and 77,067.40 is: 115,601.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,166.60 : 220,749.90 = 77,067.40 : x
  2. Step 2: Convert to fraction form
    147,166.60/220,749.90 = 77,067.40/x
  3. Step 3: Cross multiply
    147,166.60x = 220,749.90 × 77,067.40
  4. Step 4: Simplify right side
    147,166.60x = 17,012,620,843.26
  5. Step 5: Solve for x
    x = 17,012,620,843.26/147,166.60
  6. Step 6: Final answer
    x = 115,601.10

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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.