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Finding the Fourth Proportional to 139,216.60, 208,824.90 and 34,036.60

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Solution

The fourth proportional to 139,216.60, 208,824.90 and 34,036.60 is: 51,054.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,216.60 : 208,824.90 = 34,036.60 : x
  2. Step 2: Convert to fraction form
    139,216.60/208,824.90 = 34,036.60/x
  3. Step 3: Cross multiply
    139,216.60x = 208,824.90 × 34,036.60
  4. Step 4: Simplify right side
    139,216.60x = 7,107,689,591.34
  5. Step 5: Solve for x
    x = 7,107,689,591.34/139,216.60
  6. Step 6: Final answer
    x = 51,054.90

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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.