Home / 139,043.23-191,777.70-91,279.15

Finding the Fourth Proportional to 139,043.23, 191,777.70 and 91,279.15

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Solution

The fourth proportional to 139,043.23, 191,777.70 and 91,279.15 is: 125,898.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,043.23 : 191,777.70 = 91,279.15 : x
  2. Step 2: Convert to fraction form
    139,043.23/191,777.70 = 91,279.15/x
  3. Step 3: Cross multiply
    139,043.23x = 191,777.70 × 91,279.15
  4. Step 4: Simplify right side
    139,043.23x = 17,505,305,444.96
  5. Step 5: Solve for x
    x = 17,505,305,444.96/139,043.23
  6. Step 6: Final answer
    x = 125,898.29

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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.