Home / 185,803.12-256,409.04-100,921.60

Finding the Fourth Proportional to 185,803.12, 256,409.04 and 100,921.60

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Solution

The fourth proportional to 185,803.12, 256,409.04 and 100,921.60 is: 139,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,803.12 : 256,409.04 = 100,921.60 : x
  2. Step 2: Convert to fraction form
    185,803.12/256,409.04 = 100,921.60/x
  3. Step 3: Cross multiply
    185,803.12x = 256,409.04 × 100,921.60
  4. Step 4: Simplify right side
    185,803.12x = 25,877,210,571.26
  5. Step 5: Solve for x
    x = 25,877,210,571.26/185,803.12
  6. Step 6: Final answer
    x = 139,272.21

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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.