Home / 161,940.21-223,477.83-90,318.39

Finding the Fourth Proportional to 161,940.21, 223,477.83 and 90,318.39

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Solution

The fourth proportional to 161,940.21, 223,477.83 and 90,318.39 is: 124,639.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,940.21 : 223,477.83 = 90,318.39 : x
  2. Step 2: Convert to fraction form
    161,940.21/223,477.83 = 90,318.39/x
  3. Step 3: Cross multiply
    161,940.21x = 223,477.83 × 90,318.39
  4. Step 4: Simplify right side
    161,940.21x = 20,184,157,806.29
  5. Step 5: Solve for x
    x = 20,184,157,806.29/161,940.21
  6. Step 6: Final answer
    x = 124,639.57

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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.