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Finding the Fourth Proportional to 98,314.69, 147,242.40 and 90,375.88

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Solution

The fourth proportional to 98,314.69, 147,242.40 and 90,375.88 is: 135,352.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,314.69 : 147,242.40 = 90,375.88 : x
  2. Step 2: Convert to fraction form
    98,314.69/147,242.40 = 90,375.88/x
  3. Step 3: Cross multiply
    98,314.69x = 147,242.40 × 90,375.88
  4. Step 4: Simplify right side
    98,314.69x = 13,307,161,473.31
  5. Step 5: Solve for x
    x = 13,307,161,473.31/98,314.69
  6. Step 6: Final answer
    x = 135,352.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.