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Finding the Fourth Proportional to 136,351.53, 187,989.21 and 111,730.82

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Solution

The fourth proportional to 136,351.53, 187,989.21 and 111,730.82 is: 154,044.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,351.53 : 187,989.21 = 111,730.82 : x
  2. Step 2: Convert to fraction form
    136,351.53/187,989.21 = 111,730.82/x
  3. Step 3: Cross multiply
    136,351.53x = 187,989.21 × 111,730.82
  4. Step 4: Simplify right side
    136,351.53x = 21,004,187,644.51
  5. Step 5: Solve for x
    x = 21,004,187,644.51/136,351.53
  6. Step 6: Final answer
    x = 154,044.39

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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.