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Finding the Fourth Proportional to 158,578.48, 218,843.40 and 90,580.96

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Solution

The fourth proportional to 158,578.48, 218,843.40 and 90,580.96 is: 125,004.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,578.48 : 218,843.40 = 90,580.96 : x
  2. Step 2: Convert to fraction form
    158,578.48/218,843.40 = 90,580.96/x
  3. Step 3: Cross multiply
    158,578.48x = 218,843.40 × 90,580.96
  4. Step 4: Simplify right side
    158,578.48x = 19,823,045,261.66
  5. Step 5: Solve for x
    x = 19,823,045,261.66/158,578.48
  6. Step 6: Final answer
    x = 125,004.64

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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.