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Finding the Fourth Proportional to 163,089, 225,072.12 and 91,463.33

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Solution

The fourth proportional to 163,089, 225,072.12 and 91,463.33 is: 126,224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,089 : 225,072.12 = 91,463.33 : x
  2. Step 2: Convert to fraction form
    163,089/225,072.12 = 91,463.33/x
  3. Step 3: Cross multiply
    163,089x = 225,072.12 × 91,463.33
  4. Step 4: Simplify right side
    163,089x = 20,585,844,460.00
  5. Step 5: Solve for x
    x = 20,585,844,460.00/163,089
  6. Step 6: Final answer
    x = 126,224.60

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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.