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Finding the Fourth Proportional to 137,381.52, 190,556.40 and 133,739.76

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Solution

The fourth proportional to 137,381.52, 190,556.40 and 133,739.76 is: 185,505.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,381.52 : 190,556.40 = 133,739.76 : x
  2. Step 2: Convert to fraction form
    137,381.52/190,556.40 = 133,739.76/x
  3. Step 3: Cross multiply
    137,381.52x = 190,556.40 × 133,739.76
  4. Step 4: Simplify right side
    137,381.52x = 25,484,967,202.46
  5. Step 5: Solve for x
    x = 25,484,967,202.46/137,381.52
  6. Step 6: Final answer
    x = 185,505.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.