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Finding the Fourth Proportional to 201,158.74, 277,529.27 and 128,604.11

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Solution

The fourth proportional to 201,158.74, 277,529.27 and 128,604.11 is: 177,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,158.74 : 277,529.27 = 128,604.11 : x
  2. Step 2: Convert to fraction form
    201,158.74/277,529.27 = 128,604.11/x
  3. Step 3: Cross multiply
    201,158.74x = 277,529.27 × 128,604.11
  4. Step 4: Simplify right side
    201,158.74x = 35,691,403,460.03
  5. Step 5: Solve for x
    x = 35,691,403,460.03/201,158.74
  6. Step 6: Final answer
    x = 177,429.05

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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.