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Finding the Fourth Proportional to 101,147.76, 139,616.40 and 58,698

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Solution

The fourth proportional to 101,147.76, 139,616.40 and 58,698 is: 81,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,147.76 : 139,616.40 = 58,698 : x
  2. Step 2: Convert to fraction form
    101,147.76/139,616.40 = 58,698/x
  3. Step 3: Cross multiply
    101,147.76x = 139,616.40 × 58,698
  4. Step 4: Simplify right side
    101,147.76x = 8,195,203,447.20
  5. Step 5: Solve for x
    x = 8,195,203,447.20/101,147.76
  6. Step 6: Final answer
    x = 81,022.10

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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.