Home / 162,039.48-223,625.78-90,420.69

Finding the Fourth Proportional to 162,039.48, 223,625.78 and 90,420.69

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Solution

The fourth proportional to 162,039.48, 223,625.78 and 90,420.69 is: 124,786.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,039.48 : 223,625.78 = 90,420.69 : x
  2. Step 2: Convert to fraction form
    162,039.48/223,625.78 = 90,420.69/x
  3. Step 3: Cross multiply
    162,039.48x = 223,625.78 × 90,420.69
  4. Step 4: Simplify right side
    162,039.48x = 20,220,397,329.39
  5. Step 5: Solve for x
    x = 20,220,397,329.39/162,039.48
  6. Step 6: Final answer
    x = 124,786.86

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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.