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Finding the Fourth Proportional to 123,588.48, 170,550.30 and 69,871.71

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Solution

The fourth proportional to 123,588.48, 170,550.30 and 69,871.71 is: 96,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,588.48 : 170,550.30 = 69,871.71 : x
  2. Step 2: Convert to fraction form
    123,588.48/170,550.30 = 69,871.71/x
  3. Step 3: Cross multiply
    123,588.48x = 170,550.30 × 69,871.71
  4. Step 4: Simplify right side
    123,588.48x = 11,916,641,102.01
  5. Step 5: Solve for x
    x = 11,916,641,102.01/123,588.48
  6. Step 6: Final answer
    x = 96,421.94

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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.