Home / 226,142.12-312,039.78-130,661.48

Finding the Fourth Proportional to 226,142.12, 312,039.78 and 130,661.48

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Solution

The fourth proportional to 226,142.12, 312,039.78 and 130,661.48 is: 180,291.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,142.12 : 312,039.78 = 130,661.48 : x
  2. Step 2: Convert to fraction form
    226,142.12/312,039.78 = 130,661.48/x
  3. Step 3: Cross multiply
    226,142.12x = 312,039.78 × 130,661.48
  4. Step 4: Simplify right side
    226,142.12x = 40,771,579,473.67
  5. Step 5: Solve for x
    x = 40,771,579,473.67/226,142.12
  6. Step 6: Final answer
    x = 180,291.84

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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.