Home / 142,405.49-213,421.37-104,789.43

Finding the Fourth Proportional to 142,405.49, 213,421.37 and 104,789.43

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Solution

The fourth proportional to 142,405.49, 213,421.37 and 104,789.43 is: 157,046.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,405.49 : 213,421.37 = 104,789.43 : x
  2. Step 2: Convert to fraction form
    142,405.49/213,421.37 = 104,789.43/x
  3. Step 3: Cross multiply
    142,405.49x = 213,421.37 × 104,789.43
  4. Step 4: Simplify right side
    142,405.49x = 22,364,303,712.12
  5. Step 5: Solve for x
    x = 22,364,303,712.12/142,405.49
  6. Step 6: Final answer
    x = 157,046.64

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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.