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Finding the Fourth Proportional to 101,616.40, 152,165.40 and 80,880.40

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Solution

The fourth proportional to 101,616.40, 152,165.40 and 80,880.40 is: 121,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,616.40 : 152,165.40 = 80,880.40 : x
  2. Step 2: Convert to fraction form
    101,616.40/152,165.40 = 80,880.40/x
  3. Step 3: Cross multiply
    101,616.40x = 152,165.40 × 80,880.40
  4. Step 4: Simplify right side
    101,616.40x = 12,307,198,418.16
  5. Step 5: Solve for x
    x = 12,307,198,418.16/101,616.40
  6. Step 6: Final answer
    x = 121,114.29

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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.