Home / 199,735.20-299,772.90-81,491.40

Finding the Fourth Proportional to 199,735.20, 299,772.90 and 81,491.40

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Solution

The fourth proportional to 199,735.20, 299,772.90 and 81,491.40 is: 122,306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,735.20 : 299,772.90 = 81,491.40 : x
  2. Step 2: Convert to fraction form
    199,735.20/299,772.90 = 81,491.40/x
  3. Step 3: Cross multiply
    199,735.20x = 299,772.90 × 81,491.40
  4. Step 4: Simplify right side
    199,735.20x = 24,428,913,303.06
  5. Step 5: Solve for x
    x = 24,428,913,303.06/199,735.20
  6. Step 6: Final answer
    x = 122,306.50

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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.