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Finding the Fourth Proportional to 130,894.38, 180,629.51 and 79,992.27

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Solution

The fourth proportional to 130,894.38, 180,629.51 and 79,992.27 is: 110,386.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,894.38 : 180,629.51 = 79,992.27 : x
  2. Step 2: Convert to fraction form
    130,894.38/180,629.51 = 79,992.27/x
  3. Step 3: Cross multiply
    130,894.38x = 180,629.51 × 79,992.27
  4. Step 4: Simplify right side
    130,894.38x = 14,448,964,133.93
  5. Step 5: Solve for x
    x = 14,448,964,133.93/130,894.38
  6. Step 6: Final answer
    x = 110,386.44

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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.