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Finding the Fourth Proportional to 113,322, 156,384.36 and 63,021

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Solution

The fourth proportional to 113,322, 156,384.36 and 63,021 is: 86,968.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,322 : 156,384.36 = 63,021 : x
  2. Step 2: Convert to fraction form
    113,322/156,384.36 = 63,021/x
  3. Step 3: Cross multiply
    113,322x = 156,384.36 × 63,021
  4. Step 4: Simplify right side
    113,322x = 9,855,498,751.56
  5. Step 5: Solve for x
    x = 9,855,498,751.56/113,322
  6. Step 6: Final answer
    x = 86,968.98

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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.