Home / 185,788.10-256,388.90-100,905.17

Finding the Fourth Proportional to 185,788.10, 256,388.90 and 100,905.17

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Solution

The fourth proportional to 185,788.10, 256,388.90 and 100,905.17 is: 139,249.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,788.10 : 256,388.90 = 100,905.17 : x
  2. Step 2: Convert to fraction form
    185,788.10/256,388.90 = 100,905.17/x
  3. Step 3: Cross multiply
    185,788.10x = 256,388.90 × 100,905.17
  4. Step 4: Simplify right side
    185,788.10x = 25,870,963,754.14
  5. Step 5: Solve for x
    x = 25,870,963,754.14/185,788.10
  6. Step 6: Final answer
    x = 139,249.84

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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.