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Finding the Fourth Proportional to 172,389.04, 258,533.04 and 67,182.88

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Solution

The fourth proportional to 172,389.04, 258,533.04 and 67,182.88 is: 100,754.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,389.04 : 258,533.04 = 67,182.88 : x
  2. Step 2: Convert to fraction form
    172,389.04/258,533.04 = 67,182.88/x
  3. Step 3: Cross multiply
    172,389.04x = 258,533.04 × 67,182.88
  4. Step 4: Simplify right side
    172,389.04x = 17,368,994,202.36
  5. Step 5: Solve for x
    x = 17,368,994,202.36/172,389.04
  6. Step 6: Final answer
    x = 100,754.63

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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.