Home / 199,719.84-299,579.76-81,370.34

Finding the Fourth Proportional to 199,719.84, 299,579.76 and 81,370.34

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Solution

The fourth proportional to 199,719.84, 299,579.76 and 81,370.34 is: 122,055.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,719.84 : 299,579.76 = 81,370.34 : x
  2. Step 2: Convert to fraction form
    199,719.84/299,579.76 = 81,370.34/x
  3. Step 3: Cross multiply
    199,719.84x = 299,579.76 × 81,370.34
  4. Step 4: Simplify right side
    199,719.84x = 24,376,906,928.32
  5. Step 5: Solve for x
    x = 24,376,906,928.32/199,719.84
  6. Step 6: Final answer
    x = 122,055.51

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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.