Home / 99,885.20-149,901.50-47,294.60

Finding the Fourth Proportional to 99,885.20, 149,901.50 and 47,294.60

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Solution

The fourth proportional to 99,885.20, 149,901.50 and 47,294.60 is: 70,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,885.20 : 149,901.50 = 47,294.60 : x
  2. Step 2: Convert to fraction form
    99,885.20/149,901.50 = 47,294.60/x
  3. Step 3: Cross multiply
    99,885.20x = 149,901.50 × 47,294.60
  4. Step 4: Simplify right side
    99,885.20x = 7,089,530,850.63
  5. Step 5: Solve for x
    x = 7,089,530,850.63/99,885.20
  6. Step 6: Final answer
    x = 70,976.79

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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.