Home / 112,153.35-154,753.86-66,830.20

Finding the Fourth Proportional to 112,153.35, 154,753.86 and 66,830.20

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Solution

The fourth proportional to 112,153.35, 154,753.86 and 66,830.20 is: 92,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,153.35 : 154,753.86 = 66,830.20 : x
  2. Step 2: Convert to fraction form
    112,153.35/154,753.86 = 66,830.20/x
  3. Step 3: Cross multiply
    112,153.35x = 154,753.86 × 66,830.20
  4. Step 4: Simplify right side
    112,153.35x = 10,342,231,414.57
  5. Step 5: Solve for x
    x = 10,342,231,414.57/112,153.35
  6. Step 6: Final answer
    x = 92,215.09

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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.