Home / 123,648.32-170,586.36-80,678.36

Finding the Fourth Proportional to 123,648.32, 170,586.36 and 80,678.36

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Solution

The fourth proportional to 123,648.32, 170,586.36 and 80,678.36 is: 111,304.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,648.32 : 170,586.36 = 80,678.36 : x
  2. Step 2: Convert to fraction form
    123,648.32/170,586.36 = 80,678.36/x
  3. Step 3: Cross multiply
    123,648.32x = 170,586.36 × 80,678.36
  4. Step 4: Simplify right side
    123,648.32x = 13,762,627,763.17
  5. Step 5: Solve for x
    x = 13,762,627,763.17/123,648.32
  6. Step 6: Final answer
    x = 111,304.61

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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.