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Finding the Fourth Proportional to 109,003.20, 163,609.20 and 56,450.40

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Solution

The fourth proportional to 109,003.20, 163,609.20 and 56,450.40 is: 84,729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,003.20 : 163,609.20 = 56,450.40 : x
  2. Step 2: Convert to fraction form
    109,003.20/163,609.20 = 56,450.40/x
  3. Step 3: Cross multiply
    109,003.20x = 163,609.20 × 56,450.40
  4. Step 4: Simplify right side
    109,003.20x = 9,235,804,783.68
  5. Step 5: Solve for x
    x = 9,235,804,783.68/109,003.20
  6. Step 6: Final answer
    x = 84,729.67

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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.