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Finding the Fourth Proportional to 139,409.57, 208,996.80 and 60,464.34

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Solution

The fourth proportional to 139,409.57, 208,996.80 and 60,464.34 is: 90,645.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,409.57 : 208,996.80 = 60,464.34 : x
  2. Step 2: Convert to fraction form
    139,409.57/208,996.80 = 60,464.34/x
  3. Step 3: Cross multiply
    139,409.57x = 208,996.80 × 60,464.34
  4. Step 4: Simplify right side
    139,409.57x = 12,636,853,574.11
  5. Step 5: Solve for x
    x = 12,636,853,574.11/139,409.57
  6. Step 6: Final answer
    x = 90,645.52

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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.