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Finding the Fourth Proportional to 139,329.61, 208,953.40 and 39,498.52

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Solution

The fourth proportional to 139,329.61, 208,953.40 and 39,498.52 is: 59,236.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,329.61 : 208,953.40 = 39,498.52 : x
  2. Step 2: Convert to fraction form
    139,329.61/208,953.40 = 39,498.52/x
  3. Step 3: Cross multiply
    139,329.61x = 208,953.40 × 39,498.52
  4. Step 4: Simplify right side
    139,329.61x = 8,253,350,048.97
  5. Step 5: Solve for x
    x = 8,253,350,048.97/139,329.61
  6. Step 6: Final answer
    x = 59,236.15

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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.