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Finding the Fourth Proportional to 139,237.88, 208,830.36 and 39,374.00

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Solution

The fourth proportional to 139,237.88, 208,830.36 and 39,374.00 is: 59,053.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,237.88 : 208,830.36 = 39,374.00 : x
  2. Step 2: Convert to fraction form
    139,237.88/208,830.36 = 39,374.00/x
  3. Step 3: Cross multiply
    139,237.88x = 208,830.36 × 39,374.00
  4. Step 4: Simplify right side
    139,237.88x = 8,222,485,550.49
  5. Step 5: Solve for x
    x = 8,222,485,550.49/139,237.88
  6. Step 6: Final answer
    x = 59,053.51

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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.