Home / 199,619.40-299,429.10-125,212.80

Finding the Fourth Proportional to 199,619.40, 299,429.10 and 125,212.80

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Solution

The fourth proportional to 199,619.40, 299,429.10 and 125,212.80 is: 187,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,619.40 : 299,429.10 = 125,212.80 : x
  2. Step 2: Convert to fraction form
    199,619.40/299,429.10 = 125,212.80/x
  3. Step 3: Cross multiply
    199,619.40x = 299,429.10 × 125,212.80
  4. Step 4: Simplify right side
    199,619.40x = 37,492,356,012.48
  5. Step 5: Solve for x
    x = 37,492,356,012.48/199,619.40
  6. Step 6: Final answer
    x = 187,819.20

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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.