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Finding the Fourth Proportional to 123,048.90, 169,811.01 and 69,330.96

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Solution

The fourth proportional to 123,048.90, 169,811.01 and 69,330.96 is: 95,678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,048.90 : 169,811.01 = 69,330.96 : x
  2. Step 2: Convert to fraction form
    123,048.90/169,811.01 = 69,330.96/x
  3. Step 3: Cross multiply
    123,048.90x = 169,811.01 × 69,330.96
  4. Step 4: Simplify right side
    123,048.90x = 11,773,160,341.87
  5. Step 5: Solve for x
    x = 11,773,160,341.87/123,048.90
  6. Step 6: Final answer
    x = 95,678.71

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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.