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Finding the Fourth Proportional to 136,393.10, 204,621.84 and 42,898.85

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Solution

The fourth proportional to 136,393.10, 204,621.84 and 42,898.85 is: 64,358.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,393.10 : 204,621.84 = 42,898.85 : x
  2. Step 2: Convert to fraction form
    136,393.10/204,621.84 = 42,898.85/x
  3. Step 3: Cross multiply
    136,393.10x = 204,621.84 × 42,898.85
  4. Step 4: Simplify right side
    136,393.10x = 8,778,040,597.77
  5. Step 5: Solve for x
    x = 8,778,040,597.77/136,393.10
  6. Step 6: Final answer
    x = 64,358.39

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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.