Home / 203,431.51-280,734.99-112,785.15

Finding the Fourth Proportional to 203,431.51, 280,734.99 and 112,785.15

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Solution

The fourth proportional to 203,431.51, 280,734.99 and 112,785.15 is: 155,643.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,431.51 : 280,734.99 = 112,785.15 : x
  2. Step 2: Convert to fraction form
    203,431.51/280,734.99 = 112,785.15/x
  3. Step 3: Cross multiply
    203,431.51x = 280,734.99 × 112,785.15
  4. Step 4: Simplify right side
    203,431.51x = 31,662,738,587.21
  5. Step 5: Solve for x
    x = 31,662,738,587.21/203,431.51
  6. Step 6: Final answer
    x = 155,643.24

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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.