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Finding the Fourth Proportional to 119,734.60, 179,601.90 and 30,987.40

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Solution

The fourth proportional to 119,734.60, 179,601.90 and 30,987.40 is: 46,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,734.60 : 179,601.90 = 30,987.40 : x
  2. Step 2: Convert to fraction form
    119,734.60/179,601.90 = 30,987.40/x
  3. Step 3: Cross multiply
    119,734.60x = 179,601.90 × 30,987.40
  4. Step 4: Simplify right side
    119,734.60x = 5,565,395,916.06
  5. Step 5: Solve for x
    x = 5,565,395,916.06/119,734.60
  6. Step 6: Final answer
    x = 46,481.10

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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.