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Finding the Fourth Proportional to 98,081.04, 135,094 and 75,376.60

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Solution

The fourth proportional to 98,081.04, 135,094 and 75,376.60 is: 103,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,081.04 : 135,094 = 75,376.60 : x
  2. Step 2: Convert to fraction form
    98,081.04/135,094 = 75,376.60/x
  3. Step 3: Cross multiply
    98,081.04x = 135,094 × 75,376.60
  4. Step 4: Simplify right side
    98,081.04x = 10,182,926,400.40
  5. Step 5: Solve for x
    x = 10,182,926,400.40/98,081.04
  6. Step 6: Final answer
    x = 103,821.56

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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.