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Finding the Fourth Proportional to 140,660.49, 210,844.94 and 87,948.93

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Solution

The fourth proportional to 140,660.49, 210,844.94 and 87,948.93 is: 131,832.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,660.49 : 210,844.94 = 87,948.93 : x
  2. Step 2: Convert to fraction form
    140,660.49/210,844.94 = 87,948.93/x
  3. Step 3: Cross multiply
    140,660.49x = 210,844.94 × 87,948.93
  4. Step 4: Simplify right side
    140,660.49x = 18,543,586,429.17
  5. Step 5: Solve for x
    x = 18,543,586,429.17/140,660.49
  6. Step 6: Final answer
    x = 131,832.23

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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.