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Finding the Fourth Proportional to 158,888.90, 219,268.12 and 87,270.54

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Solution

The fourth proportional to 158,888.90, 219,268.12 and 87,270.54 is: 120,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,888.90 : 219,268.12 = 87,270.54 : x
  2. Step 2: Convert to fraction form
    158,888.90/219,268.12 = 87,270.54/x
  3. Step 3: Cross multiply
    158,888.90x = 219,268.12 × 87,270.54
  4. Step 4: Simplify right side
    158,888.90x = 19,135,647,237.18
  5. Step 5: Solve for x
    x = 19,135,647,237.18/158,888.90
  6. Step 6: Final answer
    x = 120,434.14

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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.