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Finding the Fourth Proportional to 136,879.60, 205,319.40 and 94,889.20

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Solution

The fourth proportional to 136,879.60, 205,319.40 and 94,889.20 is: 142,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,879.60 : 205,319.40 = 94,889.20 : x
  2. Step 2: Convert to fraction form
    136,879.60/205,319.40 = 94,889.20/x
  3. Step 3: Cross multiply
    136,879.60x = 205,319.40 × 94,889.20
  4. Step 4: Simplify right side
    136,879.60x = 19,482,593,610.48
  5. Step 5: Solve for x
    x = 19,482,593,610.48/136,879.60
  6. Step 6: Final answer
    x = 142,333.80

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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.