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Finding the Fourth Proportional to 236,969.87, 355,419.77 and 87,175.13

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Solution

The fourth proportional to 236,969.87, 355,419.77 and 87,175.13 is: 130,749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,969.87 : 355,419.77 = 87,175.13 : x
  2. Step 2: Convert to fraction form
    236,969.87/355,419.77 = 87,175.13/x
  3. Step 3: Cross multiply
    236,969.87x = 355,419.77 × 87,175.13
  4. Step 4: Simplify right side
    236,969.87x = 30,983,765,760.81
  5. Step 5: Solve for x
    x = 30,983,765,760.81/236,969.87
  6. Step 6: Final answer
    x = 130,749.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.