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Finding the Fourth Proportional to 172,497.60, 258,940.80 and 133,228.80

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Solution

The fourth proportional to 172,497.60, 258,940.80 and 133,228.80 is: 199,993.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,497.60 : 258,940.80 = 133,228.80 : x
  2. Step 2: Convert to fraction form
    172,497.60/258,940.80 = 133,228.80/x
  3. Step 3: Cross multiply
    172,497.60x = 258,940.80 × 133,228.80
  4. Step 4: Simplify right side
    172,497.60x = 34,498,372,055.04
  5. Step 5: Solve for x
    x = 34,498,372,055.04/172,497.60
  6. Step 6: Final answer
    x = 199,993.35

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1.5x scale

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.