Home / 202,111.09-278,842.85-129,553.98

Finding the Fourth Proportional to 202,111.09, 278,842.85 and 129,553.98

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Solution

The fourth proportional to 202,111.09, 278,842.85 and 129,553.98 is: 178,739.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,111.09 : 278,842.85 = 129,553.98 : x
  2. Step 2: Convert to fraction form
    202,111.09/278,842.85 = 129,553.98/x
  3. Step 3: Cross multiply
    202,111.09x = 278,842.85 × 129,553.98
  4. Step 4: Simplify right side
    202,111.09x = 36,125,202,101.67
  5. Step 5: Solve for x
    x = 36,125,202,101.67/202,111.09
  6. Step 6: Final answer
    x = 178,739.34

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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.