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Finding the Fourth Proportional to 119,246.13, 178,479.77 and 87,647.85

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Solution

The fourth proportional to 119,246.13, 178,479.77 and 87,647.85 is: 131,185.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,246.13 : 178,479.77 = 87,647.85 : x
  2. Step 2: Convert to fraction form
    119,246.13/178,479.77 = 87,647.85/x
  3. Step 3: Cross multiply
    119,246.13x = 178,479.77 × 87,647.85
  4. Step 4: Simplify right side
    119,246.13x = 15,643,367,670.76
  5. Step 5: Solve for x
    x = 15,643,367,670.76/119,246.13
  6. Step 6: Final answer
    x = 131,185.54

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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.