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Finding the Fourth Proportional to 101,165.64, 139,580.62 and 58,142.89

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Solution

The fourth proportional to 101,165.64, 139,580.62 and 58,142.89 is: 80,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,165.64 : 139,580.62 = 58,142.89 : x
  2. Step 2: Convert to fraction form
    101,165.64/139,580.62 = 58,142.89/x
  3. Step 3: Cross multiply
    101,165.64x = 139,580.62 × 58,142.89
  4. Step 4: Simplify right side
    101,165.64x = 8,115,620,634.79
  5. Step 5: Solve for x
    x = 8,115,620,634.79/101,165.64
  6. Step 6: Final answer
    x = 80,221.12

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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.