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Finding the Fourth Proportional to 154,476.75, 213,149.70 and 86,494.80

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Solution

The fourth proportional to 154,476.75, 213,149.70 and 86,494.80 is: 119,347.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,476.75 : 213,149.70 = 86,494.80 : x
  2. Step 2: Convert to fraction form
    154,476.75/213,149.70 = 86,494.80/x
  3. Step 3: Cross multiply
    154,476.75x = 213,149.70 × 86,494.80
  4. Step 4: Simplify right side
    154,476.75x = 18,436,340,671.56
  5. Step 5: Solve for x
    x = 18,436,340,671.56/154,476.75
  6. Step 6: Final answer
    x = 119,347.03

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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.