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Finding the Fourth Proportional to 139,080.66, 208,637.28 and 44,277.64

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Solution

The fourth proportional to 139,080.66, 208,637.28 and 44,277.64 is: 66,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,080.66 : 208,637.28 = 44,277.64 : x
  2. Step 2: Convert to fraction form
    139,080.66/208,637.28 = 44,277.64/x
  3. Step 3: Cross multiply
    139,080.66x = 208,637.28 × 44,277.64
  4. Step 4: Simplify right side
    139,080.66x = 9,237,966,374.42
  5. Step 5: Solve for x
    x = 9,237,966,374.42/139,080.66
  6. Step 6: Final answer
    x = 66,421.65

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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.