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Finding the Fourth Proportional to 140,659.62, 210,843.62 and 87,948.06

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Solution

The fourth proportional to 140,659.62, 210,843.62 and 87,948.06 is: 131,830.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,659.62 : 210,843.62 = 87,948.06 : x
  2. Step 2: Convert to fraction form
    140,659.62/210,843.62 = 87,948.06/x
  3. Step 3: Cross multiply
    140,659.62x = 210,843.62 × 87,948.06
  4. Step 4: Simplify right side
    140,659.62x = 18,543,287,342.38
  5. Step 5: Solve for x
    x = 18,543,287,342.38/140,659.62
  6. Step 6: Final answer
    x = 131,830.92

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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.