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Finding the Fourth Proportional to 159,347.84, 239,030.40 and 80,369.60

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Solution

The fourth proportional to 159,347.84, 239,030.40 and 80,369.60 is: 120,558.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,347.84 : 239,030.40 = 80,369.60 : x
  2. Step 2: Convert to fraction form
    159,347.84/239,030.40 = 80,369.60/x
  3. Step 3: Cross multiply
    159,347.84x = 239,030.40 × 80,369.60
  4. Step 4: Simplify right side
    159,347.84x = 19,210,777,635.84
  5. Step 5: Solve for x
    x = 19,210,777,635.84/159,347.84
  6. Step 6: Final answer
    x = 120,558.76

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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.