Home / 153,928.66-212,456.96-90,286.96

Finding the Fourth Proportional to 153,928.66, 212,456.96 and 90,286.96

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Solution

The fourth proportional to 153,928.66, 212,456.96 and 90,286.96 is: 124,616.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,928.66 : 212,456.96 = 90,286.96 : x
  2. Step 2: Convert to fraction form
    153,928.66/212,456.96 = 90,286.96/x
  3. Step 3: Cross multiply
    153,928.66x = 212,456.96 × 90,286.96
  4. Step 4: Simplify right side
    153,928.66x = 19,182,093,049.24
  5. Step 5: Solve for x
    x = 19,182,093,049.24/153,928.66
  6. Step 6: Final answer
    x = 124,616.77

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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.