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Finding the Fourth Proportional to 139,256.82, 208,919.16 and 44,486.91

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Solution

The fourth proportional to 139,256.82, 208,919.16 and 44,486.91 is: 66,741.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,256.82 : 208,919.16 = 44,486.91 : x
  2. Step 2: Convert to fraction form
    139,256.82/208,919.16 = 44,486.91/x
  3. Step 3: Cross multiply
    139,256.82x = 208,919.16 × 44,486.91
  4. Step 4: Simplify right side
    139,256.82x = 9,294,167,868.20
  5. Step 5: Solve for x
    x = 9,294,167,868.20/139,256.82
  6. Step 6: Final answer
    x = 66,741.20

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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.