Home / 212,413.93-318,621.74-86,056.56

Finding the Fourth Proportional to 212,413.93, 318,621.74 and 86,056.56

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Solution

The fourth proportional to 212,413.93, 318,621.74 and 86,056.56 is: 129,085.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,413.93 : 318,621.74 = 86,056.56 : x
  2. Step 2: Convert to fraction form
    212,413.93/318,621.74 = 86,056.56/x
  3. Step 3: Cross multiply
    212,413.93x = 318,621.74 × 86,056.56
  4. Step 4: Simplify right side
    212,413.93x = 27,419,490,455.33
  5. Step 5: Solve for x
    x = 27,419,490,455.33/212,413.93
  6. Step 6: Final answer
    x = 129,085.18

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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.