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Finding the Fourth Proportional to 202,939.64, 280,037.64 and 137,395.14

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Solution

The fourth proportional to 202,939.64, 280,037.64 and 137,395.14 is: 189,592.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,939.64 : 280,037.64 = 137,395.14 : x
  2. Step 2: Convert to fraction form
    202,939.64/280,037.64 = 137,395.14/x
  3. Step 3: Cross multiply
    202,939.64x = 280,037.64 × 137,395.14
  4. Step 4: Simplify right side
    202,939.64x = 38,475,810,753.07
  5. Step 5: Solve for x
    x = 38,475,810,753.07/202,939.64
  6. Step 6: Final answer
    x = 189,592.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.