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Finding the Fourth Proportional to 98,687.25, 136,191.66 and 53,975.25

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Solution

The fourth proportional to 98,687.25, 136,191.66 and 53,975.25 is: 74,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,687.25 : 136,191.66 = 53,975.25 : x
  2. Step 2: Convert to fraction form
    98,687.25/136,191.66 = 53,975.25/x
  3. Step 3: Cross multiply
    98,687.25x = 136,191.66 × 53,975.25
  4. Step 4: Simplify right side
    98,687.25x = 7,350,978,896.42
  5. Step 5: Solve for x
    x = 7,350,978,896.42/98,687.25
  6. Step 6: Final answer
    x = 74,487.63

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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.