Home / 139,919.07-209,858.10-68,822.63

Finding the Fourth Proportional to 139,919.07, 209,858.10 and 68,822.63

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Solution

The fourth proportional to 139,919.07, 209,858.10 and 68,822.63 is: 103,223.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,919.07 : 209,858.10 = 68,822.63 : x
  2. Step 2: Convert to fraction form
    139,919.07/209,858.10 = 68,822.63/x
  3. Step 3: Cross multiply
    139,919.07x = 209,858.10 × 68,822.63
  4. Step 4: Simplify right side
    139,919.07x = 14,442,986,368.80
  5. Step 5: Solve for x
    x = 14,442,986,368.80/139,919.07
  6. Step 6: Final answer
    x = 103,223.86

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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.