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Finding the Fourth Proportional to 159,690.40, 220,446.54 and 98,447.52

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Solution

The fourth proportional to 159,690.40, 220,446.54 and 98,447.52 is: 135,903.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,690.40 : 220,446.54 = 98,447.52 : x
  2. Step 2: Convert to fraction form
    159,690.40/220,446.54 = 98,447.52/x
  3. Step 3: Cross multiply
    159,690.40x = 220,446.54 × 98,447.52
  4. Step 4: Simplify right side
    159,690.40x = 21,702,415,982.26
  5. Step 5: Solve for x
    x = 21,702,415,982.26/159,690.40
  6. Step 6: Final answer
    x = 135,903.07

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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.