Home / 123,721.81-185,581.10-30,228.37

Finding the Fourth Proportional to 123,721.81, 185,581.10 and 30,228.37

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Solution

The fourth proportional to 123,721.81, 185,581.10 and 30,228.37 is: 45,342.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,721.81 : 185,581.10 = 30,228.37 : x
  2. Step 2: Convert to fraction form
    123,721.81/185,581.10 = 30,228.37/x
  3. Step 3: Cross multiply
    123,721.81x = 185,581.10 × 30,228.37
  4. Step 4: Simplify right side
    123,721.81x = 5,609,814,004.67
  5. Step 5: Solve for x
    x = 5,609,814,004.67/123,721.81
  6. Step 6: Final answer
    x = 45,342.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.