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Finding the Fourth Proportional to 109,230.98, 150,661.10 and 72,914.13

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Solution

The fourth proportional to 109,230.98, 150,661.10 and 72,914.13 is: 100,569.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,230.98 : 150,661.10 = 72,914.13 : x
  2. Step 2: Convert to fraction form
    109,230.98/150,661.10 = 72,914.13/x
  3. Step 3: Cross multiply
    109,230.98x = 150,661.10 × 72,914.13
  4. Step 4: Simplify right side
    109,230.98x = 10,985,323,213.63
  5. Step 5: Solve for x
    x = 10,985,323,213.63/109,230.98
  6. Step 6: Final answer
    x = 100,569.67

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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.