Home / 138,800.82-191,867.95-123,841.74

Finding the Fourth Proportional to 138,800.82, 191,867.95 and 123,841.74

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Solution

The fourth proportional to 138,800.82, 191,867.95 and 123,841.74 is: 171,189.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,800.82 : 191,867.95 = 123,841.74 : x
  2. Step 2: Convert to fraction form
    138,800.82/191,867.95 = 123,841.74/x
  3. Step 3: Cross multiply
    138,800.82x = 191,867.95 × 123,841.74
  4. Step 4: Simplify right side
    138,800.82x = 23,761,260,778.23
  5. Step 5: Solve for x
    x = 23,761,260,778.23/138,800.82
  6. Step 6: Final answer
    x = 171,189.63

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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.