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Finding the Fourth Proportional to 101,872.30, 140,725.54 and 96,890.08

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Solution

The fourth proportional to 101,872.30, 140,725.54 and 96,890.08 is: 133,843.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,872.30 : 140,725.54 = 96,890.08 : x
  2. Step 2: Convert to fraction form
    101,872.30/140,725.54 = 96,890.08/x
  3. Step 3: Cross multiply
    101,872.30x = 140,725.54 × 96,890.08
  4. Step 4: Simplify right side
    101,872.30x = 13,634,908,828.64
  5. Step 5: Solve for x
    x = 13,634,908,828.64/101,872.30
  6. Step 6: Final answer
    x = 133,843.14

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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.