Home / 109,653.62-164,231.32-85,812.59

Finding the Fourth Proportional to 109,653.62, 164,231.32 and 85,812.59

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Solution

The fourth proportional to 109,653.62, 164,231.32 and 85,812.59 is: 128,523.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,653.62 : 164,231.32 = 85,812.59 : x
  2. Step 2: Convert to fraction form
    109,653.62/164,231.32 = 85,812.59/x
  3. Step 3: Cross multiply
    109,653.62x = 164,231.32 × 85,812.59
  4. Step 4: Simplify right side
    109,653.62x = 14,093,115,064.71
  5. Step 5: Solve for x
    x = 14,093,115,064.71/109,653.62
  6. Step 6: Final answer
    x = 128,523.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.