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Finding the Fourth Proportional to 201,143.44, 277,538.67 and 115,128.73

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Solution

The fourth proportional to 201,143.44, 277,538.67 and 115,128.73 is: 158,855.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,143.44 : 277,538.67 = 115,128.73 : x
  2. Step 2: Convert to fraction form
    201,143.44/277,538.67 = 115,128.73/x
  3. Step 3: Cross multiply
    201,143.44x = 277,538.67 × 115,128.73
  4. Step 4: Simplify right side
    201,143.44x = 31,952,674,602.99
  5. Step 5: Solve for x
    x = 31,952,674,602.99/201,143.44
  6. Step 6: Final answer
    x = 158,855.17

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1.5x scale

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.