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Finding the Fourth Proportional to 199,430.37, 299,145.56 and 81,073.98

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Solution

The fourth proportional to 199,430.37, 299,145.56 and 81,073.98 is: 121,610.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,430.37 : 299,145.56 = 81,073.98 : x
  2. Step 2: Convert to fraction form
    199,430.37/299,145.56 = 81,073.98/x
  3. Step 3: Cross multiply
    199,430.37x = 299,145.56 × 81,073.98
  4. Step 4: Simplify right side
    199,430.37x = 24,252,920,743.16
  5. Step 5: Solve for x
    x = 24,252,920,743.16/199,430.37
  6. Step 6: Final answer
    x = 121,610.97

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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.