Home / 139,948.67-193,122.19-79,511.33

Finding the Fourth Proportional to 139,948.67, 193,122.19 and 79,511.33

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Solution

The fourth proportional to 139,948.67, 193,122.19 and 79,511.33 is: 109,721.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,948.67 : 193,122.19 = 79,511.33 : x
  2. Step 2: Convert to fraction form
    139,948.67/193,122.19 = 79,511.33/x
  3. Step 3: Cross multiply
    139,948.67x = 193,122.19 × 79,511.33
  4. Step 4: Simplify right side
    139,948.67x = 15,355,402,761.61
  5. Step 5: Solve for x
    x = 15,355,402,761.61/139,948.67
  6. Step 6: Final answer
    x = 109,721.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.