Home / 225,742.06-311,416.72-135,079.77

Finding the Fourth Proportional to 225,742.06, 311,416.72 and 135,079.77

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Solution

The fourth proportional to 225,742.06, 311,416.72 and 135,079.77 is: 186,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,742.06 : 311,416.72 = 135,079.77 : x
  2. Step 2: Convert to fraction form
    225,742.06/311,416.72 = 135,079.77/x
  3. Step 3: Cross multiply
    225,742.06x = 311,416.72 × 135,079.77
  4. Step 4: Simplify right side
    225,742.06x = 42,066,099,741.87
  5. Step 5: Solve for x
    x = 42,066,099,741.87/225,742.06
  6. Step 6: Final answer
    x = 186,345.87

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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.