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Finding the Fourth Proportional to 139,223.88, 192,124.08 and 75,560.40

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Solution

The fourth proportional to 139,223.88, 192,124.08 and 75,560.40 is: 104,270.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,223.88 : 192,124.08 = 75,560.40 : x
  2. Step 2: Convert to fraction form
    139,223.88/192,124.08 = 75,560.40/x
  3. Step 3: Cross multiply
    139,223.88x = 192,124.08 × 75,560.40
  4. Step 4: Simplify right side
    139,223.88x = 14,516,972,334.43
  5. Step 5: Solve for x
    x = 14,516,972,334.43/139,223.88
  6. Step 6: Final answer
    x = 104,270.71

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1.5x scale

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.