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Finding the Fourth Proportional to 159,603.84, 239,474.88 and 85,645.44

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Solution

The fourth proportional to 159,603.84, 239,474.88 and 85,645.44 is: 128,505.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,603.84 : 239,474.88 = 85,645.44 : x
  2. Step 2: Convert to fraction form
    159,603.84/239,474.88 = 85,645.44/x
  3. Step 3: Cross multiply
    159,603.84x = 239,474.88 × 85,645.44
  4. Step 4: Simplify right side
    159,603.84x = 20,509,931,466.55
  5. Step 5: Solve for x
    x = 20,509,931,466.55/159,603.84
  6. Step 6: Final answer
    x = 128,505.25

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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.