Home / 109,528.08-151,135.92-61,778.58

Finding the Fourth Proportional to 109,528.08, 151,135.92 and 61,778.58

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Solution

The fourth proportional to 109,528.08, 151,135.92 and 61,778.58 is: 85,247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,528.08 : 151,135.92 = 61,778.58 : x
  2. Step 2: Convert to fraction form
    109,528.08/151,135.92 = 61,778.58/x
  3. Step 3: Cross multiply
    109,528.08x = 151,135.92 × 61,778.58
  4. Step 4: Simplify right side
    109,528.08x = 9,336,962,524.59
  5. Step 5: Solve for x
    x = 9,336,962,524.59/109,528.08
  6. Step 6: Final answer
    x = 85,247.20

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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.