Home / 215,259.86-322,918.01-71,117.80

Finding the Fourth Proportional to 215,259.86, 322,918.01 and 71,117.80

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Solution

The fourth proportional to 215,259.86, 322,918.01 and 71,117.80 is: 106,686.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,259.86 : 322,918.01 = 71,117.80 : x
  2. Step 2: Convert to fraction form
    215,259.86/322,918.01 = 71,117.80/x
  3. Step 3: Cross multiply
    215,259.86x = 322,918.01 × 71,117.80
  4. Step 4: Simplify right side
    215,259.86x = 22,965,217,555.39
  5. Step 5: Solve for x
    x = 22,965,217,555.39/215,259.86
  6. Step 6: Final answer
    x = 106,686.02

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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.