Home / 201,908.05-278,633.51-121,336.81

Finding the Fourth Proportional to 201,908.05, 278,633.51 and 121,336.81

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Solution

The fourth proportional to 201,908.05, 278,633.51 and 121,336.81 is: 167,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,908.05 : 278,633.51 = 121,336.81 : x
  2. Step 2: Convert to fraction form
    201,908.05/278,633.51 = 121,336.81/x
  3. Step 3: Cross multiply
    201,908.05x = 278,633.51 × 121,336.81
  4. Step 4: Simplify right side
    201,908.05x = 33,808,500,655.82
  5. Step 5: Solve for x
    x = 33,808,500,655.82/201,908.05
  6. Step 6: Final answer
    x = 167,445.04

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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.