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Finding the Fourth Proportional to 101,329.63, 139,846.76 and 84,303.84

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Solution

The fourth proportional to 101,329.63, 139,846.76 and 84,303.84 is: 116,349.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,329.63 : 139,846.76 = 84,303.84 : x
  2. Step 2: Convert to fraction form
    101,329.63/139,846.76 = 84,303.84/x
  3. Step 3: Cross multiply
    101,329.63x = 139,846.76 × 84,303.84
  4. Step 4: Simplify right side
    101,329.63x = 11,789,618,879.56
  5. Step 5: Solve for x
    x = 11,789,618,879.56/101,329.63
  6. Step 6: Final answer
    x = 116,349.18

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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.