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Finding the Fourth Proportional to 109,354.16, 150,909.28 and 61,608.28

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Solution

The fourth proportional to 109,354.16, 150,909.28 and 61,608.28 is: 85,019.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,354.16 : 150,909.28 = 61,608.28 : x
  2. Step 2: Convert to fraction form
    109,354.16/150,909.28 = 61,608.28/x
  3. Step 3: Cross multiply
    109,354.16x = 150,909.28 × 61,608.28
  4. Step 4: Simplify right side
    109,354.16x = 9,297,261,176.84
  5. Step 5: Solve for x
    x = 9,297,261,176.84/109,354.16
  6. Step 6: Final answer
    x = 85,019.73

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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.