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Finding the Fourth Proportional to 136,009.45, 203,814.51 and 68,448.58

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Solution

The fourth proportional to 136,009.45, 203,814.51 and 68,448.58 is: 102,572.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,009.45 : 203,814.51 = 68,448.58 : x
  2. Step 2: Convert to fraction form
    136,009.45/203,814.51 = 68,448.58/x
  3. Step 3: Cross multiply
    136,009.45x = 203,814.51 × 68,448.58
  4. Step 4: Simplify right side
    136,009.45x = 13,950,813,792.90
  5. Step 5: Solve for x
    x = 13,950,813,792.90/136,009.45
  6. Step 6: Final answer
    x = 102,572.39

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1.5x scale

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.