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Finding the Fourth Proportional to 98,812.80, 136,361.56 and 54,100.80

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Solution

The fourth proportional to 98,812.80, 136,361.56 and 54,100.80 is: 74,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,812.80 : 136,361.56 = 54,100.80 : x
  2. Step 2: Convert to fraction form
    98,812.80/136,361.56 = 54,100.80/x
  3. Step 3: Cross multiply
    98,812.80x = 136,361.56 × 54,100.80
  4. Step 4: Simplify right side
    98,812.80x = 7,377,269,485.25
  5. Step 5: Solve for x
    x = 7,377,269,485.25/98,812.80
  6. Step 6: Final answer
    x = 74,659.05

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1.5x scale

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.