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Finding the Fourth Proportional to 201,356.68, 277,865.22 and 129,739.72

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Solution

The fourth proportional to 201,356.68, 277,865.22 and 129,739.72 is: 179,036.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,356.68 : 277,865.22 = 129,739.72 : x
  2. Step 2: Convert to fraction form
    201,356.68/277,865.22 = 129,739.72/x
  3. Step 3: Cross multiply
    201,356.68x = 277,865.22 × 129,739.72
  4. Step 4: Simplify right side
    201,356.68x = 36,050,155,840.54
  5. Step 5: Solve for x
    x = 36,050,155,840.54/201,356.68
  6. Step 6: Final answer
    x = 179,036.30

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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.