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Finding the Fourth Proportional to 122,860.65, 169,553.15 and 69,149.15

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Solution

The fourth proportional to 122,860.65, 169,553.15 and 69,149.15 is: 95,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,860.65 : 169,553.15 = 69,149.15 : x
  2. Step 2: Convert to fraction form
    122,860.65/169,553.15 = 69,149.15/x
  3. Step 3: Cross multiply
    122,860.65x = 169,553.15 × 69,149.15
  4. Step 4: Simplify right side
    122,860.65x = 11,724,455,951.31
  5. Step 5: Solve for x
    x = 11,724,455,951.31/122,860.65
  6. Step 6: Final answer
    x = 95,428.89

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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.