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Finding the Fourth Proportional to 139,086.64, 208,646.28 and 44,283.60

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Solution

The fourth proportional to 139,086.64, 208,646.28 and 44,283.60 is: 66,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,086.64 : 208,646.28 = 44,283.60 : x
  2. Step 2: Convert to fraction form
    139,086.64/208,646.28 = 44,283.60/x
  3. Step 3: Cross multiply
    139,086.64x = 208,646.28 × 44,283.60
  4. Step 4: Simplify right side
    139,086.64x = 9,239,608,405.01
  5. Step 5: Solve for x
    x = 9,239,608,405.01/139,086.64
  6. Step 6: Final answer
    x = 66,430.60

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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.