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Finding the Fourth Proportional to 139,216.74, 208,828.70 and 44,446.83

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Solution

The fourth proportional to 139,216.74, 208,828.70 and 44,446.83 is: 66,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,216.74 : 208,828.70 = 44,446.83 : x
  2. Step 2: Convert to fraction form
    139,216.74/208,828.70 = 44,446.83/x
  3. Step 3: Cross multiply
    139,216.74x = 208,828.70 × 44,446.83
  4. Step 4: Simplify right side
    139,216.74x = 9,281,773,672.46
  5. Step 5: Solve for x
    x = 9,281,773,672.46/139,216.74
  6. Step 6: Final answer
    x = 66,671.39

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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.