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Finding the Fourth Proportional to 101,359.34, 139,879.77 and 67,308.96

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Solution

The fourth proportional to 101,359.34, 139,879.77 and 67,308.96 is: 92,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,359.34 : 139,879.77 = 67,308.96 : x
  2. Step 2: Convert to fraction form
    101,359.34/139,879.77 = 67,308.96/x
  3. Step 3: Cross multiply
    101,359.34x = 139,879.77 × 67,308.96
  4. Step 4: Simplify right side
    101,359.34x = 9,415,161,843.74
  5. Step 5: Solve for x
    x = 9,415,161,843.74/101,359.34
  6. Step 6: Final answer
    x = 92,888.94

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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.