Home / 185,640.40-256,176.89-100,755.64

Finding the Fourth Proportional to 185,640.40, 256,176.89 and 100,755.64

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Solution

The fourth proportional to 185,640.40, 256,176.89 and 100,755.64 is: 139,039.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,640.40 : 256,176.89 = 100,755.64 : x
  2. Step 2: Convert to fraction form
    185,640.40/256,176.89 = 100,755.64/x
  3. Step 3: Cross multiply
    185,640.40x = 256,176.89 × 100,755.64
  4. Step 4: Simplify right side
    185,640.40x = 25,811,265,476.16
  5. Step 5: Solve for x
    x = 25,811,265,476.16/185,640.40
  6. Step 6: Final answer
    x = 139,039.06

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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.