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Finding the Fourth Proportional to 139,025.64, 208,590.66 and 64,181.64

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Solution

The fourth proportional to 139,025.64, 208,590.66 and 64,181.64 is: 96,296.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,025.64 : 208,590.66 = 64,181.64 : x
  2. Step 2: Convert to fraction form
    139,025.64/208,590.66 = 64,181.64/x
  3. Step 3: Cross multiply
    139,025.64x = 208,590.66 × 64,181.64
  4. Step 4: Simplify right side
    139,025.64x = 13,387,690,647.48
  5. Step 5: Solve for x
    x = 13,387,690,647.48/139,025.64
  6. Step 6: Final answer
    x = 96,296.56

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1.5x scale

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.