Home / 199,629.80-299,444.70-81,240.20

Finding the Fourth Proportional to 199,629.80, 299,444.70 and 81,240.20

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Solution

The fourth proportional to 199,629.80, 299,444.70 and 81,240.20 is: 121,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,629.80 : 299,444.70 = 81,240.20 : x
  2. Step 2: Convert to fraction form
    199,629.80/299,444.70 = 81,240.20/x
  3. Step 3: Cross multiply
    199,629.80x = 299,444.70 × 81,240.20
  4. Step 4: Simplify right side
    199,629.80x = 24,326,947,316.94
  5. Step 5: Solve for x
    x = 24,326,947,316.94/199,629.80
  6. Step 6: Final answer
    x = 121,860.30

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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.