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Finding the Fourth Proportional to 139,203.52, 192,102.24 and 75,541.84

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Solution

The fourth proportional to 139,203.52, 192,102.24 and 75,541.84 is: 104,248.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,203.52 : 192,102.24 = 75,541.84 : x
  2. Step 2: Convert to fraction form
    139,203.52/192,102.24 = 75,541.84/x
  3. Step 3: Cross multiply
    139,203.52x = 192,102.24 × 75,541.84
  4. Step 4: Simplify right side
    139,203.52x = 14,511,756,677.72
  5. Step 5: Solve for x
    x = 14,511,756,677.72/139,203.52
  6. Step 6: Final answer
    x = 104,248.49

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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.