Home / 203,145.12-280,341.09-112,499.13

Finding the Fourth Proportional to 203,145.12, 280,341.09 and 112,499.13

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Solution

The fourth proportional to 203,145.12, 280,341.09 and 112,499.13 is: 155,249.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,145.12 : 280,341.09 = 112,499.13 : x
  2. Step 2: Convert to fraction form
    203,145.12/280,341.09 = 112,499.13/x
  3. Step 3: Cross multiply
    203,145.12x = 280,341.09 × 112,499.13
  4. Step 4: Simplify right side
    203,145.12x = 31,538,128,728.25
  5. Step 5: Solve for x
    x = 31,538,128,728.25/203,145.12
  6. Step 6: Final answer
    x = 155,249.26

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Double scale
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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.