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Finding the Fourth Proportional to 158,847.66, 219,229.53 and 90,855.21

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Solution

The fourth proportional to 158,847.66, 219,229.53 and 90,855.21 is: 125,391.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,847.66 : 219,229.53 = 90,855.21 : x
  2. Step 2: Convert to fraction form
    158,847.66/219,229.53 = 90,855.21/x
  3. Step 3: Cross multiply
    158,847.66x = 219,229.53 × 90,855.21
  4. Step 4: Simplify right side
    158,847.66x = 19,918,144,986.35
  5. Step 5: Solve for x
    x = 19,918,144,986.35/158,847.66
  6. Step 6: Final answer
    x = 125,391.49

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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.