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Finding the Fourth Proportional to 158,092.96, 218,174.36 and 90,120.64

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Solution

The fourth proportional to 158,092.96, 218,174.36 and 90,120.64 is: 124,369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,092.96 : 218,174.36 = 90,120.64 : x
  2. Step 2: Convert to fraction form
    158,092.96/218,174.36 = 90,120.64/x
  3. Step 3: Cross multiply
    158,092.96x = 218,174.36 × 90,120.64
  4. Step 4: Simplify right side
    158,092.96x = 19,662,012,954.79
  5. Step 5: Solve for x
    x = 19,662,012,954.79/158,092.96
  6. Step 6: Final answer
    x = 124,369.95

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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.