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Finding the Fourth Proportional to 173,686.80, 260,616.60 and 68,509.20

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Solution

The fourth proportional to 173,686.80, 260,616.60 and 68,509.20 is: 102,797.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,686.80 : 260,616.60 = 68,509.20 : x
  2. Step 2: Convert to fraction form
    173,686.80/260,616.60 = 68,509.20/x
  3. Step 3: Cross multiply
    173,686.80x = 260,616.60 × 68,509.20
  4. Step 4: Simplify right side
    173,686.80x = 17,854,634,772.72
  5. Step 5: Solve for x
    x = 17,854,634,772.72/173,686.80
  6. Step 6: Final answer
    x = 102,797.88

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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.