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Finding the Fourth Proportional to 154,602.98, 213,358.24 and 86,620.52

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Solution

The fourth proportional to 154,602.98, 213,358.24 and 86,620.52 is: 119,539.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,602.98 : 213,358.24 = 86,620.52 : x
  2. Step 2: Convert to fraction form
    154,602.98/213,358.24 = 86,620.52/x
  3. Step 3: Cross multiply
    154,602.98x = 213,358.24 × 86,620.52
  4. Step 4: Simplify right side
    154,602.98x = 18,481,201,695.08
  5. Step 5: Solve for x
    x = 18,481,201,695.08/154,602.98
  6. Step 6: Final answer
    x = 119,539.75

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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.