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Finding the Fourth Proportional to 172,315.83, 258,473.88 and 53,996.40

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Solution

The fourth proportional to 172,315.83, 258,473.88 and 53,996.40 is: 80,994.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,315.83 : 258,473.88 = 53,996.40 : x
  2. Step 2: Convert to fraction form
    172,315.83/258,473.88 = 53,996.40/x
  3. Step 3: Cross multiply
    172,315.83x = 258,473.88 × 53,996.40
  4. Step 4: Simplify right side
    172,315.83x = 13,956,659,014.03
  5. Step 5: Solve for x
    x = 13,956,659,014.03/172,315.83
  6. Step 6: Final answer
    x = 80,994.64

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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.