Home / 89,644.20-134,466.30-85,707.60

Finding the Fourth Proportional to 89,644.20, 134,466.30 and 85,707.60

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Solution

The fourth proportional to 89,644.20, 134,466.30 and 85,707.60 is: 128,561.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,644.20 : 134,466.30 = 85,707.60 : x
  2. Step 2: Convert to fraction form
    89,644.20/134,466.30 = 85,707.60/x
  3. Step 3: Cross multiply
    89,644.20x = 134,466.30 × 85,707.60
  4. Step 4: Simplify right side
    89,644.20x = 11,524,783,853.88
  5. Step 5: Solve for x
    x = 11,524,783,853.88/89,644.20
  6. Step 6: Final answer
    x = 128,561.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.