Home / 89,546.40-134,319.60-66,218.40

Finding the Fourth Proportional to 89,546.40, 134,319.60 and 66,218.40

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Solution

The fourth proportional to 89,546.40, 134,319.60 and 66,218.40 is: 99,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,546.40 : 134,319.60 = 66,218.40 : x
  2. Step 2: Convert to fraction form
    89,546.40/134,319.60 = 66,218.40/x
  3. Step 3: Cross multiply
    89,546.40x = 134,319.60 × 66,218.40
  4. Step 4: Simplify right side
    89,546.40x = 8,894,429,000.64
  5. Step 5: Solve for x
    x = 8,894,429,000.64/89,546.40
  6. Step 6: Final answer
    x = 99,327.60

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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.