Home / 122,631.21-169,277.31-71,660.51

Finding the Fourth Proportional to 122,631.21, 169,277.31 and 71,660.51

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Solution

The fourth proportional to 122,631.21, 169,277.31 and 71,660.51 is: 98,918.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,631.21 : 169,277.31 = 71,660.51 : x
  2. Step 2: Convert to fraction form
    122,631.21/169,277.31 = 71,660.51/x
  3. Step 3: Cross multiply
    122,631.21x = 169,277.31 × 71,660.51
  4. Step 4: Simplify right side
    122,631.21x = 12,130,498,366.03
  5. Step 5: Solve for x
    x = 12,130,498,366.03/122,631.21
  6. Step 6: Final answer
    x = 98,918.52

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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.