Home / 139,788.22-209,689.25-39,963.12

Finding the Fourth Proportional to 139,788.22, 209,689.25 and 39,963.12

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Solution

The fourth proportional to 139,788.22, 209,689.25 and 39,963.12 is: 59,946.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,788.22 : 209,689.25 = 39,963.12 : x
  2. Step 2: Convert to fraction form
    139,788.22/209,689.25 = 39,963.12/x
  3. Step 3: Cross multiply
    139,788.22x = 209,689.25 × 39,963.12
  4. Step 4: Simplify right side
    139,788.22x = 8,379,837,228.47
  5. Step 5: Solve for x
    x = 8,379,837,228.47/139,788.22
  6. Step 6: Final answer
    x = 59,946.66

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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.