Home / 189,232.20-261,128.61-108,603

Finding the Fourth Proportional to 189,232.20, 261,128.61 and 108,603

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Solution

The fourth proportional to 189,232.20, 261,128.61 and 108,603 is: 149,865.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,232.20 : 261,128.61 = 108,603 : x
  2. Step 2: Convert to fraction form
    189,232.20/261,128.61 = 108,603/x
  3. Step 3: Cross multiply
    189,232.20x = 261,128.61 × 108,603
  4. Step 4: Simplify right side
    189,232.20x = 28,359,350,431.83
  5. Step 5: Solve for x
    x = 28,359,350,431.83/189,232.20
  6. Step 6: Final answer
    x = 149,865.35

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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.