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Finding the Fourth Proportional to 203,512.79, 280,864.91 and 112,897.96

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Solution

The fourth proportional to 203,512.79, 280,864.91 and 112,897.96 is: 155,808.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,512.79 : 280,864.91 = 112,897.96 : x
  2. Step 2: Convert to fraction form
    203,512.79/280,864.91 = 112,897.96/x
  3. Step 3: Cross multiply
    203,512.79x = 280,864.91 × 112,897.96
  4. Step 4: Simplify right side
    203,512.79x = 31,709,074,954.67
  5. Step 5: Solve for x
    x = 31,709,074,954.67/203,512.79
  6. Step 6: Final answer
    x = 155,808.76

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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.