Home / 137,730.11-206,596.98-78,495.21

Finding the Fourth Proportional to 137,730.11, 206,596.98 and 78,495.21

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Solution

The fourth proportional to 137,730.11, 206,596.98 and 78,495.21 is: 117,743.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,730.11 : 206,596.98 = 78,495.21 : x
  2. Step 2: Convert to fraction form
    137,730.11/206,596.98 = 78,495.21/x
  3. Step 3: Cross multiply
    137,730.11x = 206,596.98 × 78,495.21
  4. Step 4: Simplify right side
    137,730.11x = 16,216,873,330.47
  5. Step 5: Solve for x
    x = 16,216,873,330.47/137,730.11
  6. Step 6: Final answer
    x = 117,743.85

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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.