Home / 165,783.06-228,782.34-90,331.56

Finding the Fourth Proportional to 165,783.06, 228,782.34 and 90,331.56

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Solution

The fourth proportional to 165,783.06, 228,782.34 and 90,331.56 is: 124,658.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,783.06 : 228,782.34 = 90,331.56 : x
  2. Step 2: Convert to fraction form
    165,783.06/228,782.34 = 90,331.56/x
  3. Step 3: Cross multiply
    165,783.06x = 228,782.34 × 90,331.56
  4. Step 4: Simplify right side
    165,783.06x = 20,666,265,672.65
  5. Step 5: Solve for x
    x = 20,666,265,672.65/165,783.06
  6. Step 6: Final answer
    x = 124,658.49

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1.5x scale

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.