Home / 139,148.11-208,730.85-39,315.97

Finding the Fourth Proportional to 139,148.11, 208,730.85 and 39,315.97

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Solution

The fourth proportional to 139,148.11, 208,730.85 and 39,315.97 is: 58,976.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,148.11 : 208,730.85 = 39,315.97 : x
  2. Step 2: Convert to fraction form
    139,148.11/208,730.85 = 39,315.97/x
  3. Step 3: Cross multiply
    139,148.11x = 208,730.85 × 39,315.97
  4. Step 4: Simplify right side
    139,148.11x = 8,206,455,836.67
  5. Step 5: Solve for x
    x = 8,206,455,836.67/139,148.11
  6. Step 6: Final answer
    x = 58,976.41

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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.