Home / 202,961.39-280,081-112,321.13

Finding the Fourth Proportional to 202,961.39, 280,081 and 112,321.13

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Solution

The fourth proportional to 202,961.39, 280,081 and 112,321.13 is: 154,999.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,961.39 : 280,081 = 112,321.13 : x
  2. Step 2: Convert to fraction form
    202,961.39/280,081 = 112,321.13/x
  3. Step 3: Cross multiply
    202,961.39x = 280,081 × 112,321.13
  4. Step 4: Simplify right side
    202,961.39x = 31,459,014,411.53
  5. Step 5: Solve for x
    x = 31,459,014,411.53/202,961.39
  6. Step 6: Final answer
    x = 154,999.99

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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.