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Finding the Fourth Proportional to 172,313.55, 258,470.42 and 53,994.15

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Solution

The fourth proportional to 172,313.55, 258,470.42 and 53,994.15 is: 80,991.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,313.55 : 258,470.42 = 53,994.15 : x
  2. Step 2: Convert to fraction form
    172,313.55/258,470.42 = 53,994.15/x
  3. Step 3: Cross multiply
    172,313.55x = 258,470.42 × 53,994.15
  4. Step 4: Simplify right side
    172,313.55x = 13,955,890,358.07
  5. Step 5: Solve for x
    x = 13,955,890,358.07/172,313.55
  6. Step 6: Final answer
    x = 80,991.25

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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.