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Finding the Fourth Proportional to 161,950.21, 223,491.63 and 90,328.39

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Solution

The fourth proportional to 161,950.21, 223,491.63 and 90,328.39 is: 124,653.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,950.21 : 223,491.63 = 90,328.39 : x
  2. Step 2: Convert to fraction form
    161,950.21/223,491.63 = 90,328.39/x
  3. Step 3: Cross multiply
    161,950.21x = 223,491.63 × 90,328.39
  4. Step 4: Simplify right side
    161,950.21x = 20,187,639,116.38
  5. Step 5: Solve for x
    x = 20,187,639,116.38/161,950.21
  6. Step 6: Final answer
    x = 124,653.37

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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.