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Finding the Fourth Proportional to 199,819.74, 299,534.80 and 79,840.92

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Solution

The fourth proportional to 199,819.74, 299,534.80 and 79,840.92 is: 119,683.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,819.74 : 299,534.80 = 79,840.92 : x
  2. Step 2: Convert to fraction form
    199,819.74/299,534.80 = 79,840.92/x
  3. Step 3: Cross multiply
    199,819.74x = 299,534.80 × 79,840.92
  4. Step 4: Simplify right side
    199,819.74x = 23,915,134,004.02
  5. Step 5: Solve for x
    x = 23,915,134,004.02/199,819.74
  6. Step 6: Final answer
    x = 119,683.54

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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.