Home / 115,272.72-172,924.20-45,142.92

Finding the Fourth Proportional to 115,272.72, 172,924.20 and 45,142.92

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Solution

The fourth proportional to 115,272.72, 172,924.20 and 45,142.92 is: 67,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,272.72 : 172,924.20 = 45,142.92 : x
  2. Step 2: Convert to fraction form
    115,272.72/172,924.20 = 45,142.92/x
  3. Step 3: Cross multiply
    115,272.72x = 172,924.20 × 45,142.92
  4. Step 4: Simplify right side
    115,272.72x = 7,806,303,326.66
  5. Step 5: Solve for x
    x = 7,806,303,326.66/115,272.72
  6. Step 6: Final answer
    x = 67,720.30

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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.