Home / 185,621.60-256,158.72-100,738.76

Finding the Fourth Proportional to 185,621.60, 256,158.72 and 100,738.76

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Solution

The fourth proportional to 185,621.60, 256,158.72 and 100,738.76 is: 139,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,621.60 : 256,158.72 = 100,738.76 : x
  2. Step 2: Convert to fraction form
    185,621.60/256,158.72 = 100,738.76/x
  3. Step 3: Cross multiply
    185,621.60x = 256,158.72 × 100,738.76
  4. Step 4: Simplify right side
    185,621.60x = 25,805,111,815.99
  5. Step 5: Solve for x
    x = 25,805,111,815.99/185,621.60
  6. Step 6: Final answer
    x = 139,019.98

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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.