Home / 139,789.44-208,669.05-129,381.48

Finding the Fourth Proportional to 139,789.44, 208,669.05 and 129,381.48

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Solution

The fourth proportional to 139,789.44, 208,669.05 and 129,381.48 is: 193,132.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,789.44 : 208,669.05 = 129,381.48 : x
  2. Step 2: Convert to fraction form
    139,789.44/208,669.05 = 129,381.48/x
  3. Step 3: Cross multiply
    139,789.44x = 208,669.05 × 129,381.48
  4. Step 4: Simplify right side
    139,789.44x = 26,997,910,519.19
  5. Step 5: Solve for x
    x = 26,997,910,519.19/139,789.44
  6. Step 6: Final answer
    x = 193,132.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.