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Finding the Fourth Proportional to 155,479.26, 214,523.32 and 87,483

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Solution

The fourth proportional to 155,479.26, 214,523.32 and 87,483 is: 120,705.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,479.26 : 214,523.32 = 87,483 : x
  2. Step 2: Convert to fraction form
    155,479.26/214,523.32 = 87,483/x
  3. Step 3: Cross multiply
    155,479.26x = 214,523.32 × 87,483
  4. Step 4: Simplify right side
    155,479.26x = 18,767,143,603.56
  5. Step 5: Solve for x
    x = 18,767,143,603.56/155,479.26
  6. Step 6: Final answer
    x = 120,705.13

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.