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Finding the Fourth Proportional to 203,001, 280,141.93 and 112,363.21

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Solution

The fourth proportional to 203,001, 280,141.93 and 112,363.21 is: 155,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,001 : 280,141.93 = 112,363.21 : x
  2. Step 2: Convert to fraction form
    203,001/280,141.93 = 112,363.21/x
  3. Step 3: Cross multiply
    203,001x = 280,141.93 × 112,363.21
  4. Step 4: Simplify right side
    203,001x = 31,477,646,510.40
  5. Step 5: Solve for x
    x = 31,477,646,510.40/203,001
  6. Step 6: Final answer
    x = 155,061.53

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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.