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Finding the Fourth Proportional to 201,285.71, 277,788.78 and 120,711.77

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Solution

The fourth proportional to 201,285.71, 277,788.78 and 120,711.77 is: 166,590.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,285.71 : 277,788.78 = 120,711.77 : x
  2. Step 2: Convert to fraction form
    201,285.71/277,788.78 = 120,711.77/x
  3. Step 3: Cross multiply
    201,285.71x = 277,788.78 × 120,711.77
  4. Step 4: Simplify right side
    201,285.71x = 33,532,373,931.00
  5. Step 5: Solve for x
    x = 33,532,373,931.00/201,285.71
  6. Step 6: Final answer
    x = 166,590.94

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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.