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Finding the Fourth Proportional to 159,421.52, 219,985.41 and 98,157.98

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Solution

The fourth proportional to 159,421.52, 219,985.41 and 98,157.98 is: 135,447.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,421.52 : 219,985.41 = 98,157.98 : x
  2. Step 2: Convert to fraction form
    159,421.52/219,985.41 = 98,157.98/x
  3. Step 3: Cross multiply
    159,421.52x = 219,985.41 × 98,157.98
  4. Step 4: Simplify right side
    159,421.52x = 21,593,322,375.14
  5. Step 5: Solve for x
    x = 21,593,322,375.14/159,421.52
  6. Step 6: Final answer
    x = 135,447.98

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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.