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Finding the Fourth Proportional to 139,212.01, 192,111.54 and 75,548.44

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Solution

The fourth proportional to 139,212.01, 192,111.54 and 75,548.44 is: 104,256.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,212.01 : 192,111.54 = 75,548.44 : x
  2. Step 2: Convert to fraction form
    139,212.01/192,111.54 = 75,548.44/x
  3. Step 3: Cross multiply
    139,212.01x = 192,111.54 × 75,548.44
  4. Step 4: Simplify right side
    139,212.01x = 14,513,726,192.44
  5. Step 5: Solve for x
    x = 14,513,726,192.44/139,212.01
  6. Step 6: Final answer
    x = 104,256.28

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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.