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Finding the Fourth Proportional to 199,359.76, 275,123.10 and 108,720.67

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Solution

The fourth proportional to 199,359.76, 275,123.10 and 108,720.67 is: 150,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,359.76 : 275,123.10 = 108,720.67 : x
  2. Step 2: Convert to fraction form
    199,359.76/275,123.10 = 108,720.67/x
  3. Step 3: Cross multiply
    199,359.76x = 275,123.10 × 108,720.67
  4. Step 4: Simplify right side
    199,359.76x = 29,911,566,388.86
  5. Step 5: Solve for x
    x = 29,911,566,388.86/199,359.76
  6. Step 6: Final answer
    x = 150,038.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.