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Finding the Fourth Proportional to 202,647.40, 279,667.90 and 112,001.42

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Solution

The fourth proportional to 202,647.40, 279,667.90 and 112,001.42 is: 154,569.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,647.40 : 279,667.90 = 112,001.42 : x
  2. Step 2: Convert to fraction form
    202,647.40/279,667.90 = 112,001.42/x
  3. Step 3: Cross multiply
    202,647.40x = 279,667.90 × 112,001.42
  4. Step 4: Simplify right side
    202,647.40x = 31,323,200,564.45
  5. Step 5: Solve for x
    x = 31,323,200,564.45/202,647.40
  6. Step 6: Final answer
    x = 154,569.96

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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.