Home / 153,935.82-212,371.47-103,668.30

Finding the Fourth Proportional to 153,935.82, 212,371.47 and 103,668.30

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Solution

The fourth proportional to 153,935.82, 212,371.47 and 103,668.30 is: 143,021.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,935.82 : 212,371.47 = 103,668.30 : x
  2. Step 2: Convert to fraction form
    153,935.82/212,371.47 = 103,668.30/x
  3. Step 3: Cross multiply
    153,935.82x = 212,371.47 × 103,668.30
  4. Step 4: Simplify right side
    153,935.82x = 22,016,189,263.40
  5. Step 5: Solve for x
    x = 22,016,189,263.40/153,935.82
  6. Step 6: Final answer
    x = 143,021.87

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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.