Home / 213,608.15-320,444.08-78,661.83

Finding the Fourth Proportional to 213,608.15, 320,444.08 and 78,661.83

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Solution

The fourth proportional to 213,608.15, 320,444.08 and 78,661.83 is: 118,004.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,608.15 : 320,444.08 = 78,661.83 : x
  2. Step 2: Convert to fraction form
    213,608.15/320,444.08 = 78,661.83/x
  3. Step 3: Cross multiply
    213,608.15x = 320,444.08 × 78,661.83
  4. Step 4: Simplify right side
    213,608.15x = 25,206,717,352.16
  5. Step 5: Solve for x
    x = 25,206,717,352.16/213,608.15
  6. Step 6: Final answer
    x = 118,004.48

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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.