Home / 155,140.62-214,081.44-87,153.90

Finding the Fourth Proportional to 155,140.62, 214,081.44 and 87,153.90

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Solution

The fourth proportional to 155,140.62, 214,081.44 and 87,153.90 is: 120,265.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,140.62 : 214,081.44 = 87,153.90 : x
  2. Step 2: Convert to fraction form
    155,140.62/214,081.44 = 87,153.90/x
  3. Step 3: Cross multiply
    155,140.62x = 214,081.44 × 87,153.90
  4. Step 4: Simplify right side
    155,140.62x = 18,658,032,413.62
  5. Step 5: Solve for x
    x = 18,658,032,413.62/155,140.62
  6. Step 6: Final answer
    x = 120,265.29

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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.