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Finding the Fourth Proportional to 158,305, 218,460.90 and 91,241.32

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Solution

The fourth proportional to 158,305, 218,460.90 and 91,241.32 is: 125,913.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,305 : 218,460.90 = 91,241.32 : x
  2. Step 2: Convert to fraction form
    158,305/218,460.90 = 91,241.32/x
  3. Step 3: Cross multiply
    158,305x = 218,460.90 × 91,241.32
  4. Step 4: Simplify right side
    158,305x = 19,932,660,884.39
  5. Step 5: Solve for x
    x = 19,932,660,884.39/158,305
  6. Step 6: Final answer
    x = 125,913.02

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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.