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Finding the Fourth Proportional to 159,403.44, 239,160.50 and 70,719.21

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Solution

The fourth proportional to 159,403.44, 239,160.50 and 70,719.21 is: 106,103.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,403.44 : 239,160.50 = 70,719.21 : x
  2. Step 2: Convert to fraction form
    159,403.44/239,160.50 = 70,719.21/x
  3. Step 3: Cross multiply
    159,403.44x = 239,160.50 × 70,719.21
  4. Step 4: Simplify right side
    159,403.44x = 16,913,241,534.81
  5. Step 5: Solve for x
    x = 16,913,241,534.81/159,403.44
  6. Step 6: Final answer
    x = 106,103.36

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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.