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Finding the Fourth Proportional to 140,568.53, 210,863.72 and 40,730.15

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Solution

The fourth proportional to 140,568.53, 210,863.72 and 40,730.15 is: 61,098.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,568.53 : 210,863.72 = 40,730.15 : x
  2. Step 2: Convert to fraction form
    140,568.53/210,863.72 = 40,730.15/x
  3. Step 3: Cross multiply
    140,568.53x = 210,863.72 × 40,730.15
  4. Step 4: Simplify right side
    140,568.53x = 8,588,511,574.14
  5. Step 5: Solve for x
    x = 8,588,511,574.14/140,568.53
  6. Step 6: Final answer
    x = 61,098.40

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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.