Home / 74,149.97-102,326.45-40,157.69

Finding the Fourth Proportional to 74,149.97, 102,326.45 and 40,157.69

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Solution

The fourth proportional to 74,149.97, 102,326.45 and 40,157.69 is: 55,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,149.97 : 102,326.45 = 40,157.69 : x
  2. Step 2: Convert to fraction form
    74,149.97/102,326.45 = 40,157.69/x
  3. Step 3: Cross multiply
    74,149.97x = 102,326.45 × 40,157.69
  4. Step 4: Simplify right side
    74,149.97x = 4,109,193,145.48
  5. Step 5: Solve for x
    x = 4,109,193,145.48/74,149.97
  6. Step 6: Final answer
    x = 55,417.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.