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Finding the Fourth Proportional to 136,990.53, 205,485.30 and 37,150.47

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Solution

The fourth proportional to 136,990.53, 205,485.30 and 37,150.47 is: 55,725.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,990.53 : 205,485.30 = 37,150.47 : x
  2. Step 2: Convert to fraction form
    136,990.53/205,485.30 = 37,150.47/x
  3. Step 3: Cross multiply
    136,990.53x = 205,485.30 × 37,150.47
  4. Step 4: Simplify right side
    136,990.53x = 7,633,875,473.09
  5. Step 5: Solve for x
    x = 7,633,875,473.09/136,990.53
  6. Step 6: Final answer
    x = 55,725.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.