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Finding the Fourth Proportional to 173,872.40, 260,808.60 and 68,637.20

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Solution

The fourth proportional to 173,872.40, 260,808.60 and 68,637.20 is: 102,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,872.40 : 260,808.60 = 68,637.20 : x
  2. Step 2: Convert to fraction form
    173,872.40/260,808.60 = 68,637.20/x
  3. Step 3: Cross multiply
    173,872.40x = 260,808.60 × 68,637.20
  4. Step 4: Simplify right side
    173,872.40x = 17,901,172,039.92
  5. Step 5: Solve for x
    x = 17,901,172,039.92/173,872.40
  6. Step 6: Final answer
    x = 102,955.80

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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.