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Finding the Fourth Proportional to 199,707.10, 299,630.62 and 124,739.47

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Solution

The fourth proportional to 199,707.10, 299,630.62 and 124,739.47 is: 187,152.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,707.10 : 299,630.62 = 124,739.47 : x
  2. Step 2: Convert to fraction form
    199,707.10/299,630.62 = 124,739.47/x
  3. Step 3: Cross multiply
    199,707.10x = 299,630.62 × 124,739.47
  4. Step 4: Simplify right side
    199,707.10x = 37,375,765,967.59
  5. Step 5: Solve for x
    x = 37,375,765,967.59/199,707.10
  6. Step 6: Final answer
    x = 187,152.91

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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.