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Finding the Fourth Proportional to 172,168.32, 258,267.36 and 47,509.32

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Solution

The fourth proportional to 172,168.32, 258,267.36 and 47,509.32 is: 71,268.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,168.32 : 258,267.36 = 47,509.32 : x
  2. Step 2: Convert to fraction form
    172,168.32/258,267.36 = 47,509.32/x
  3. Step 3: Cross multiply
    172,168.32x = 258,267.36 × 47,509.32
  4. Step 4: Simplify right side
    172,168.32x = 12,270,106,651.80
  5. Step 5: Solve for x
    x = 12,270,106,651.80/172,168.32
  6. Step 6: Final answer
    x = 71,268.09

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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.