Home / 161,786.82-223,266.16-90,165.40

Finding the Fourth Proportional to 161,786.82, 223,266.16 and 90,165.40

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Solution

The fourth proportional to 161,786.82, 223,266.16 and 90,165.40 is: 124,428.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,786.82 : 223,266.16 = 90,165.40 : x
  2. Step 2: Convert to fraction form
    161,786.82/223,266.16 = 90,165.40/x
  3. Step 3: Cross multiply
    161,786.82x = 223,266.16 × 90,165.40
  4. Step 4: Simplify right side
    161,786.82x = 20,130,882,622.86
  5. Step 5: Solve for x
    x = 20,130,882,622.86/161,786.82
  6. Step 6: Final answer
    x = 124,428.45

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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.