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Finding the Fourth Proportional to 98,902.40, 136,485.16 and 53,581.54

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Solution

The fourth proportional to 98,902.40, 136,485.16 and 53,581.54 is: 73,942.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,902.40 : 136,485.16 = 53,581.54 : x
  2. Step 2: Convert to fraction form
    98,902.40/136,485.16 = 53,581.54/x
  3. Step 3: Cross multiply
    98,902.40x = 136,485.16 × 53,581.54
  4. Step 4: Simplify right side
    98,902.40x = 7,313,084,109.61
  5. Step 5: Solve for x
    x = 7,313,084,109.61/98,902.40
  6. Step 6: Final answer
    x = 73,942.43

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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.