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Finding the Fourth Proportional to 109,158.45, 150,627.95 and 61,410.78

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Solution

The fourth proportional to 109,158.45, 150,627.95 and 61,410.78 is: 84,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,158.45 : 150,627.95 = 61,410.78 : x
  2. Step 2: Convert to fraction form
    109,158.45/150,627.95 = 61,410.78/x
  3. Step 3: Cross multiply
    109,158.45x = 150,627.95 × 61,410.78
  4. Step 4: Simplify right side
    109,158.45x = 9,250,179,592.25
  5. Step 5: Solve for x
    x = 9,250,179,592.25/109,158.45
  6. Step 6: Final answer
    x = 84,740.85

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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.