Home / 185,571.28-256,088.40-100,688.36

Finding the Fourth Proportional to 185,571.28, 256,088.40 and 100,688.36

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Solution

The fourth proportional to 185,571.28, 256,088.40 and 100,688.36 is: 138,949.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,571.28 : 256,088.40 = 100,688.36 : x
  2. Step 2: Convert to fraction form
    185,571.28/256,088.40 = 100,688.36/x
  3. Step 3: Cross multiply
    185,571.28x = 256,088.40 × 100,688.36
  4. Step 4: Simplify right side
    185,571.28x = 25,785,121,011.02
  5. Step 5: Solve for x
    x = 25,785,121,011.02/185,571.28
  6. Step 6: Final answer
    x = 138,949.96

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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.