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Finding the Fourth Proportional to 158,958.64, 219,362.74 and 87,338.49

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Solution

The fourth proportional to 158,958.64, 219,362.74 and 87,338.49 is: 120,527.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,958.64 : 219,362.74 = 87,338.49 : x
  2. Step 2: Convert to fraction form
    158,958.64/219,362.74 = 87,338.49/x
  3. Step 3: Cross multiply
    158,958.64x = 219,362.74 × 87,338.49
  4. Step 4: Simplify right side
    158,958.64x = 19,158,810,473.86
  5. Step 5: Solve for x
    x = 19,158,810,473.86/158,958.64
  6. Step 6: Final answer
    x = 120,527.02

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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.