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Finding the Fourth Proportional to 120,300.30, 180,450.45 and 109,802.70

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Solution

The fourth proportional to 120,300.30, 180,450.45 and 109,802.70 is: 164,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,300.30 : 180,450.45 = 109,802.70 : x
  2. Step 2: Convert to fraction form
    120,300.30/180,450.45 = 109,802.70/x
  3. Step 3: Cross multiply
    120,300.30x = 180,450.45 × 109,802.70
  4. Step 4: Simplify right side
    120,300.30x = 19,813,946,626.22
  5. Step 5: Solve for x
    x = 19,813,946,626.22/120,300.30
  6. Step 6: Final answer
    x = 164,704.05

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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.