Home / 252,218.12-378,413.58-86,122.76

Finding the Fourth Proportional to 252,218.12, 378,413.58 and 86,122.76

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Solution

The fourth proportional to 252,218.12, 378,413.58 and 86,122.76 is: 129,213.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,218.12 : 378,413.58 = 86,122.76 : x
  2. Step 2: Convert to fraction form
    252,218.12/378,413.58 = 86,122.76/x
  3. Step 3: Cross multiply
    252,218.12x = 378,413.58 × 86,122.76
  4. Step 4: Simplify right side
    252,218.12x = 32,590,021,931.08
  5. Step 5: Solve for x
    x = 32,590,021,931.08/252,218.12
  6. Step 6: Final answer
    x = 129,213.64

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1.5x scale

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.