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Finding the Fourth Proportional to 143,201.70, 197,564.72 and 88,729.01

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Solution

The fourth proportional to 143,201.70, 197,564.72 and 88,729.01 is: 122,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,201.70 : 197,564.72 = 88,729.01 : x
  2. Step 2: Convert to fraction form
    143,201.70/197,564.72 = 88,729.01/x
  3. Step 3: Cross multiply
    143,201.70x = 197,564.72 × 88,729.01
  4. Step 4: Simplify right side
    143,201.70x = 17,529,720,585.06
  5. Step 5: Solve for x
    x = 17,529,720,585.06/143,201.70
  6. Step 6: Final answer
    x = 122,412.80

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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.