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Finding the Fourth Proportional to 139,315.85, 208,973.77 and 34,133.91

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Solution

The fourth proportional to 139,315.85, 208,973.77 and 34,133.91 is: 51,200.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,315.85 : 208,973.77 = 34,133.91 : x
  2. Step 2: Convert to fraction form
    139,315.85/208,973.77 = 34,133.91/x
  3. Step 3: Cross multiply
    139,315.85x = 208,973.77 × 34,133.91
  4. Step 4: Simplify right side
    139,315.85x = 7,133,091,180.56
  5. Step 5: Solve for x
    x = 7,133,091,180.56/139,315.85
  6. Step 6: Final answer
    x = 51,200.86

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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.