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Finding the Fourth Proportional to 101,346.88, 139,863.36 and 61,073.68

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Solution

The fourth proportional to 101,346.88, 139,863.36 and 61,073.68 is: 84,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,346.88 : 139,863.36 = 61,073.68 : x
  2. Step 2: Convert to fraction form
    101,346.88/139,863.36 = 61,073.68/x
  3. Step 3: Cross multiply
    101,346.88x = 139,863.36 × 61,073.68
  4. Step 4: Simplify right side
    101,346.88x = 8,541,970,092.36
  5. Step 5: Solve for x
    x = 8,541,970,092.36/101,346.88
  6. Step 6: Final answer
    x = 84,284.49

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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.