Home / 123,228.04-169,976.40-80,789.32

Finding the Fourth Proportional to 123,228.04, 169,976.40 and 80,789.32

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Solution

The fourth proportional to 123,228.04, 169,976.40 and 80,789.32 is: 111,437.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,228.04 : 169,976.40 = 80,789.32 : x
  2. Step 2: Convert to fraction form
    123,228.04/169,976.40 = 80,789.32/x
  3. Step 3: Cross multiply
    123,228.04x = 169,976.40 × 80,789.32
  4. Step 4: Simplify right side
    123,228.04x = 13,732,277,772.05
  5. Step 5: Solve for x
    x = 13,732,277,772.05/123,228.04
  6. Step 6: Final answer
    x = 111,437.93

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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.