Home / 199,864.51-275,809.65-109,218.49

Finding the Fourth Proportional to 199,864.51, 275,809.65 and 109,218.49

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Solution

The fourth proportional to 199,864.51, 275,809.65 and 109,218.49 is: 150,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,864.51 : 275,809.65 = 109,218.49 : x
  2. Step 2: Convert to fraction form
    199,864.51/275,809.65 = 109,218.49/x
  3. Step 3: Cross multiply
    199,864.51x = 275,809.65 × 109,218.49
  4. Step 4: Simplify right side
    199,864.51x = 30,123,513,500.43
  5. Step 5: Solve for x
    x = 30,123,513,500.43/199,864.51
  6. Step 6: Final answer
    x = 150,719.67

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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.