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Finding the Fourth Proportional to 120,038.88, 179,960.88 and 49,970.64

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Solution

The fourth proportional to 120,038.88, 179,960.88 and 49,970.64 is: 74,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,038.88 : 179,960.88 = 49,970.64 : x
  2. Step 2: Convert to fraction form
    120,038.88/179,960.88 = 49,970.64/x
  3. Step 3: Cross multiply
    120,038.88x = 179,960.88 × 49,970.64
  4. Step 4: Simplify right side
    120,038.88x = 8,992,760,348.56
  5. Step 5: Solve for x
    x = 8,992,760,348.56/120,038.88
  6. Step 6: Final answer
    x = 74,915.40

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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.