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Finding the Fourth Proportional to 201,082.86, 277,424.88 and 128,528.19

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Solution

The fourth proportional to 201,082.86, 277,424.88 and 128,528.19 is: 177,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,082.86 : 277,424.88 = 128,528.19 : x
  2. Step 2: Convert to fraction form
    201,082.86/277,424.88 = 128,528.19/x
  3. Step 3: Cross multiply
    201,082.86x = 277,424.88 × 128,528.19
  4. Step 4: Simplify right side
    201,082.86x = 35,656,917,687.37
  5. Step 5: Solve for x
    x = 35,656,917,687.37/201,082.86
  6. Step 6: Final answer
    x = 177,324.50

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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.