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Finding the Fourth Proportional to 185,325.80, 255,749.46 and 100,442.90

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Solution

The fourth proportional to 185,325.80, 255,749.46 and 100,442.90 is: 138,611.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,325.80 : 255,749.46 = 100,442.90 : x
  2. Step 2: Convert to fraction form
    185,325.80/255,749.46 = 100,442.90/x
  3. Step 3: Cross multiply
    185,325.80x = 255,749.46 × 100,442.90
  4. Step 4: Simplify right side
    185,325.80x = 25,688,217,435.83
  5. Step 5: Solve for x
    x = 25,688,217,435.83/185,325.80
  6. Step 6: Final answer
    x = 138,611.12

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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.