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Finding the Fourth Proportional to 273,068.80, 409,660.80 and 86,099.20

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Solution

The fourth proportional to 273,068.80, 409,660.80 and 86,099.20 is: 129,166.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,068.80 : 409,660.80 = 86,099.20 : x
  2. Step 2: Convert to fraction form
    273,068.80/409,660.80 = 86,099.20/x
  3. Step 3: Cross multiply
    273,068.80x = 409,660.80 × 86,099.20
  4. Step 4: Simplify right side
    273,068.80x = 35,271,467,151.36
  5. Step 5: Solve for x
    x = 35,271,467,151.36/273,068.80
  6. Step 6: Final answer
    x = 129,166.96

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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.