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Finding the Fourth Proportional to 173,880.40, 260,820.60 and 68,645.20

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Solution

The fourth proportional to 173,880.40, 260,820.60 and 68,645.20 is: 102,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,880.40 : 260,820.60 = 68,645.20 : x
  2. Step 2: Convert to fraction form
    173,880.40/260,820.60 = 68,645.20/x
  3. Step 3: Cross multiply
    173,880.40x = 260,820.60 × 68,645.20
  4. Step 4: Simplify right side
    173,880.40x = 17,904,082,251.12
  5. Step 5: Solve for x
    x = 17,904,082,251.12/173,880.40
  6. Step 6: Final answer
    x = 102,967.80

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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.