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Finding the Fourth Proportional to 139,149.84, 192,026.73 and 75,487.64

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Solution

The fourth proportional to 139,149.84, 192,026.73 and 75,487.64 is: 104,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,149.84 : 192,026.73 = 75,487.64 : x
  2. Step 2: Convert to fraction form
    139,149.84/192,026.73 = 75,487.64/x
  3. Step 3: Cross multiply
    139,149.84x = 192,026.73 × 75,487.64
  4. Step 4: Simplify right side
    139,149.84x = 14,495,644,021.49
  5. Step 5: Solve for x
    x = 14,495,644,021.49/139,149.84
  6. Step 6: Final answer
    x = 104,172.91

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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.