Home / 89,905.40-134,627.70-66,404.60

Finding the Fourth Proportional to 89,905.40, 134,627.70 and 66,404.60

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Solution

The fourth proportional to 89,905.40, 134,627.70 and 66,404.60 is: 99,436.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,905.40 : 134,627.70 = 66,404.60 : x
  2. Step 2: Convert to fraction form
    89,905.40/134,627.70 = 66,404.60/x
  3. Step 3: Cross multiply
    89,905.40x = 134,627.70 × 66,404.60
  4. Step 4: Simplify right side
    89,905.40x = 8,939,898,567.42
  5. Step 5: Solve for x
    x = 8,939,898,567.42/89,905.40
  6. Step 6: Final answer
    x = 99,436.73

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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.