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Finding the Fourth Proportional to 199,579.80, 299,369.70 and 124,784.40

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Solution

The fourth proportional to 199,579.80, 299,369.70 and 124,784.40 is: 187,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,579.80 : 299,369.70 = 124,784.40 : x
  2. Step 2: Convert to fraction form
    199,579.80/299,369.70 = 124,784.40/x
  3. Step 3: Cross multiply
    199,579.80x = 299,369.70 × 124,784.40
  4. Step 4: Simplify right side
    199,579.80x = 37,356,668,392.68
  5. Step 5: Solve for x
    x = 37,356,668,392.68/199,579.80
  6. Step 6: Final answer
    x = 187,176.60

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1.5x scale

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.