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Finding the Fourth Proportional to 118,802.70, 178,145.73 and 43,919.82

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Solution

The fourth proportional to 118,802.70, 178,145.73 and 43,919.82 is: 65,858.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,802.70 : 178,145.73 = 43,919.82 : x
  2. Step 2: Convert to fraction form
    118,802.70/178,145.73 = 43,919.82/x
  3. Step 3: Cross multiply
    118,802.70x = 178,145.73 × 43,919.82
  4. Step 4: Simplify right side
    118,802.70x = 7,824,128,395.37
  5. Step 5: Solve for x
    x = 7,824,128,395.37/118,802.70
  6. Step 6: Final answer
    x = 65,858.17

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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.