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Finding the Fourth Proportional to 109,361.98, 150,913.95 and 61,618.15

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Solution

The fourth proportional to 109,361.98, 150,913.95 and 61,618.15 is: 85,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,361.98 : 150,913.95 = 61,618.15 : x
  2. Step 2: Convert to fraction form
    109,361.98/150,913.95 = 61,618.15/x
  3. Step 3: Cross multiply
    109,361.98x = 150,913.95 × 61,618.15
  4. Step 4: Simplify right side
    109,361.98x = 9,299,037,653.62
  5. Step 5: Solve for x
    x = 9,299,037,653.62/109,361.98
  6. Step 6: Final answer
    x = 85,029.90

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1.5x scale

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.