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Finding the Fourth Proportional to 199,968.86, 299,953.59 and 80,079.80

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Solution

The fourth proportional to 199,968.86, 299,953.59 and 80,079.80 is: 120,119.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,968.86 : 299,953.59 = 80,079.80 : x
  2. Step 2: Convert to fraction form
    199,968.86/299,953.59 = 80,079.80/x
  3. Step 3: Cross multiply
    199,968.86x = 299,953.59 × 80,079.80
  4. Step 4: Simplify right side
    199,968.86x = 24,020,221,996.71
  5. Step 5: Solve for x
    x = 24,020,221,996.71/199,968.86
  6. Step 6: Final answer
    x = 120,119.82

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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.