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Finding the Fourth Proportional to 152,940.21, 210,998.61 and 112,749.54

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Solution

The fourth proportional to 152,940.21, 210,998.61 and 112,749.54 is: 155,550.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,940.21 : 210,998.61 = 112,749.54 : x
  2. Step 2: Convert to fraction form
    152,940.21/210,998.61 = 112,749.54/x
  3. Step 3: Cross multiply
    152,940.21x = 210,998.61 × 112,749.54
  4. Step 4: Simplify right side
    152,940.21x = 23,789,996,218.14
  5. Step 5: Solve for x
    x = 23,789,996,218.14/152,940.21
  6. Step 6: Final answer
    x = 155,550.96

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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.