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Finding the Fourth Proportional to 139,270.88, 192,225.42 and 88,353.88

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Solution

The fourth proportional to 139,270.88, 192,225.42 and 88,353.88 is: 121,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,270.88 : 192,225.42 = 88,353.88 : x
  2. Step 2: Convert to fraction form
    139,270.88/192,225.42 = 88,353.88/x
  3. Step 3: Cross multiply
    139,270.88x = 192,225.42 × 88,353.88
  4. Step 4: Simplify right side
    139,270.88x = 16,983,861,211.07
  5. Step 5: Solve for x
    x = 16,983,861,211.07/139,270.88
  6. Step 6: Final answer
    x = 121,948.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.