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Finding the Fourth Proportional to 118,850.81, 163,919.63 and 101,004.89

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Solution

The fourth proportional to 118,850.81, 163,919.63 and 101,004.89 is: 139,306.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,850.81 : 163,919.63 = 101,004.89 : x
  2. Step 2: Convert to fraction form
    118,850.81/163,919.63 = 101,004.89/x
  3. Step 3: Cross multiply
    118,850.81x = 163,919.63 × 101,004.89
  4. Step 4: Simplify right side
    118,850.81x = 16,556,683,629.90
  5. Step 5: Solve for x
    x = 16,556,683,629.90/118,850.81
  6. Step 6: Final answer
    x = 139,306.45

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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.