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Finding the Fourth Proportional to 128,166.24, 175,584.84 and 123,374.42

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Solution

The fourth proportional to 128,166.24, 175,584.84 and 123,374.42 is: 169,020.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,166.24 : 175,584.84 = 123,374.42 : x
  2. Step 2: Convert to fraction form
    128,166.24/175,584.84 = 123,374.42/x
  3. Step 3: Cross multiply
    128,166.24x = 175,584.84 × 123,374.42
  4. Step 4: Simplify right side
    128,166.24x = 21,662,677,795.79
  5. Step 5: Solve for x
    x = 21,662,677,795.79/128,166.24
  6. Step 6: Final answer
    x = 169,020.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.