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Finding the Fourth Proportional to 201,112.79, 277,366.01 and 143,645.72

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Solution

The fourth proportional to 201,112.79, 277,366.01 and 143,645.72 is: 198,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,112.79 : 277,366.01 = 143,645.72 : x
  2. Step 2: Convert to fraction form
    201,112.79/277,366.01 = 143,645.72/x
  3. Step 3: Cross multiply
    201,112.79x = 277,366.01 × 143,645.72
  4. Step 4: Simplify right side
    201,112.79x = 39,842,438,104.92
  5. Step 5: Solve for x
    x = 39,842,438,104.92/201,112.79
  6. Step 6: Final answer
    x = 198,109.92

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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.