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Finding the Fourth Proportional to 101,221.87, 139,555.15 and 69,333.79

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Solution

The fourth proportional to 101,221.87, 139,555.15 and 69,333.79 is: 95,590.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,221.87 : 139,555.15 = 69,333.79 : x
  2. Step 2: Convert to fraction form
    101,221.87/139,555.15 = 69,333.79/x
  3. Step 3: Cross multiply
    101,221.87x = 139,555.15 × 69,333.79
  4. Step 4: Simplify right side
    101,221.87x = 9,675,887,463.52
  5. Step 5: Solve for x
    x = 9,675,887,463.52/101,221.87
  6. Step 6: Final answer
    x = 95,590.88

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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.