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Finding the Fourth Proportional to 139,046.68, 208,622.14 and 64,202.68

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Solution

The fourth proportional to 139,046.68, 208,622.14 and 64,202.68 is: 96,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,046.68 : 208,622.14 = 64,202.68 : x
  2. Step 2: Convert to fraction form
    139,046.68/208,622.14 = 64,202.68/x
  3. Step 3: Cross multiply
    139,046.68x = 208,622.14 × 64,202.68
  4. Step 4: Simplify right side
    139,046.68x = 13,394,100,495.34
  5. Step 5: Solve for x
    x = 13,394,100,495.34/139,046.68
  6. Step 6: Final answer
    x = 96,328.09

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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.