Home / 199,400.48-299,157.20-81,156.68

Finding the Fourth Proportional to 199,400.48, 299,157.20 and 81,156.68

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Solution

The fourth proportional to 199,400.48, 299,157.20 and 81,156.68 is: 121,758.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,400.48 : 299,157.20 = 81,156.68 : x
  2. Step 2: Convert to fraction form
    199,400.48/299,157.20 = 81,156.68/x
  3. Step 3: Cross multiply
    199,400.48x = 299,157.20 × 81,156.68
  4. Step 4: Simplify right side
    199,400.48x = 24,278,605,150.10
  5. Step 5: Solve for x
    x = 24,278,605,150.10/199,400.48
  6. Step 6: Final answer
    x = 121,758.01

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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.