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Finding the Fourth Proportional to 128,166.18, 175,584.74 and 123,374.35

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Solution

The fourth proportional to 128,166.18, 175,584.74 and 123,374.35 is: 169,020.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,166.18 : 175,584.74 = 123,374.35 : x
  2. Step 2: Convert to fraction form
    128,166.18/175,584.74 = 123,374.35/x
  3. Step 3: Cross multiply
    128,166.18x = 175,584.74 × 123,374.35
  4. Step 4: Simplify right side
    128,166.18x = 21,662,653,167.42
  5. Step 5: Solve for x
    x = 21,662,653,167.42/128,166.18
  6. Step 6: Final answer
    x = 169,020.04

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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.