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Finding the Fourth Proportional to 119,241.63, 178,473.02 and 87,643.35

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Solution

The fourth proportional to 119,241.63, 178,473.02 and 87,643.35 is: 131,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,241.63 : 178,473.02 = 87,643.35 : x
  2. Step 2: Convert to fraction form
    119,241.63/178,473.02 = 87,643.35/x
  3. Step 3: Cross multiply
    119,241.63x = 178,473.02 × 87,643.35
  4. Step 4: Simplify right side
    119,241.63x = 15,641,972,919.20
  5. Step 5: Solve for x
    x = 15,641,972,919.20/119,241.63
  6. Step 6: Final answer
    x = 131,178.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.