Home / 109,520.86-151,136.05-61,770.45

Finding the Fourth Proportional to 109,520.86, 151,136.05 and 61,770.45

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Solution

The fourth proportional to 109,520.86, 151,136.05 and 61,770.45 is: 85,241.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,520.86 : 151,136.05 = 61,770.45 : x
  2. Step 2: Convert to fraction form
    109,520.86/151,136.05 = 61,770.45/x
  3. Step 3: Cross multiply
    109,520.86x = 151,136.05 × 61,770.45
  4. Step 4: Simplify right side
    109,520.86x = 9,335,741,671.47
  5. Step 5: Solve for x
    x = 9,335,741,671.47/109,520.86
  6. Step 6: Final answer
    x = 85,241.68

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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.