Home / 138,947.54-191,751.17-85,262.22

Finding the Fourth Proportional to 138,947.54, 191,751.17 and 85,262.22

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Solution

The fourth proportional to 138,947.54, 191,751.17 and 85,262.22 is: 117,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,947.54 : 191,751.17 = 85,262.22 : x
  2. Step 2: Convert to fraction form
    138,947.54/191,751.17 = 85,262.22/x
  3. Step 3: Cross multiply
    138,947.54x = 191,751.17 × 85,262.22
  4. Step 4: Simplify right side
    138,947.54x = 16,349,130,015.49
  5. Step 5: Solve for x
    x = 16,349,130,015.49/138,947.54
  6. Step 6: Final answer
    x = 117,664.05

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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.