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Finding the Fourth Proportional to 159,403.81, 239,161.06 and 70,719.59

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Solution

The fourth proportional to 159,403.81, 239,161.06 and 70,719.59 is: 106,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,403.81 : 239,161.06 = 70,719.59 : x
  2. Step 2: Convert to fraction form
    159,403.81/239,161.06 = 70,719.59/x
  3. Step 3: Cross multiply
    159,403.81x = 239,161.06 × 70,719.59
  4. Step 4: Simplify right side
    159,403.81x = 16,913,370,999.76
  5. Step 5: Solve for x
    x = 16,913,370,999.76/159,403.81
  6. Step 6: Final answer
    x = 106,103.93

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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.