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Finding the Fourth Proportional to 115,798.95, 173,435.99 and 90,682.47

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Solution

The fourth proportional to 115,798.95, 173,435.99 and 90,682.47 is: 135,818.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,798.95 : 173,435.99 = 90,682.47 : x
  2. Step 2: Convert to fraction form
    115,798.95/173,435.99 = 90,682.47/x
  3. Step 3: Cross multiply
    115,798.95x = 173,435.99 × 90,682.47
  4. Step 4: Simplify right side
    115,798.95x = 15,727,603,506.68
  5. Step 5: Solve for x
    x = 15,727,603,506.68/115,798.95
  6. Step 6: Final answer
    x = 135,818.19

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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.