Home / 109,490.16-151,181.94-85,684.68

Finding the Fourth Proportional to 109,490.16, 151,181.94 and 85,684.68

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Solution

The fourth proportional to 109,490.16, 151,181.94 and 85,684.68 is: 118,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,490.16 : 151,181.94 = 85,684.68 : x
  2. Step 2: Convert to fraction form
    109,490.16/151,181.94 = 85,684.68/x
  3. Step 3: Cross multiply
    109,490.16x = 151,181.94 × 85,684.68
  4. Step 4: Simplify right side
    109,490.16x = 12,953,976,150.68
  5. Step 5: Solve for x
    x = 12,953,976,150.68/109,490.16
  6. Step 6: Final answer
    x = 118,311.78

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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.