Home / 115,145.82-172,740.60-40,287.24

Finding the Fourth Proportional to 115,145.82, 172,740.60 and 40,287.24

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Solution

The fourth proportional to 115,145.82, 172,740.60 and 40,287.24 is: 60,438.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,145.82 : 172,740.60 = 40,287.24 : x
  2. Step 2: Convert to fraction form
    115,145.82/172,740.60 = 40,287.24/x
  3. Step 3: Cross multiply
    115,145.82x = 172,740.60 × 40,287.24
  4. Step 4: Simplify right side
    115,145.82x = 6,959,242,009.94
  5. Step 5: Solve for x
    x = 6,959,242,009.94/115,145.82
  6. Step 6: Final answer
    x = 60,438.51

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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.