Home / 199,623.57-299,322.36-81,155.61

Finding the Fourth Proportional to 199,623.57, 299,322.36 and 81,155.61

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Solution

The fourth proportional to 199,623.57, 299,322.36 and 81,155.61 is: 121,687.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,623.57 : 299,322.36 = 81,155.61 : x
  2. Step 2: Convert to fraction form
    199,623.57/299,322.36 = 81,155.61/x
  3. Step 3: Cross multiply
    199,623.57x = 299,322.36 × 81,155.61
  4. Step 4: Simplify right side
    199,623.57x = 24,291,688,712.44
  5. Step 5: Solve for x
    x = 24,291,688,712.44/199,623.57
  6. Step 6: Final answer
    x = 121,687.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.