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Finding the Fourth Proportional to 185,379.77, 278,152.73 and 85,486.42

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Solution

The fourth proportional to 185,379.77, 278,152.73 and 85,486.42 is: 128,267.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,379.77 : 278,152.73 = 85,486.42 : x
  2. Step 2: Convert to fraction form
    185,379.77/278,152.73 = 85,486.42/x
  3. Step 3: Cross multiply
    185,379.77x = 278,152.73 × 85,486.42
  4. Step 4: Simplify right side
    185,379.77x = 23,778,279,282.73
  5. Step 5: Solve for x
    x = 23,778,279,282.73/185,379.77
  6. Step 6: Final answer
    x = 128,267.93

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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.