Home / 154,269.97-212,912.27-86,290.72

Finding the Fourth Proportional to 154,269.97, 212,912.27 and 86,290.72

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Solution

The fourth proportional to 154,269.97, 212,912.27 and 86,290.72 is: 119,092.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,269.97 : 212,912.27 = 86,290.72 : x
  2. Step 2: Convert to fraction form
    154,269.97/212,912.27 = 86,290.72/x
  3. Step 3: Cross multiply
    154,269.97x = 212,912.27 × 86,290.72
  4. Step 4: Simplify right side
    154,269.97x = 18,372,352,677.68
  5. Step 5: Solve for x
    x = 18,372,352,677.68/154,269.97
  6. Step 6: Final answer
    x = 119,092.22

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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.