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Finding the Fourth Proportional to 123,409.83, 170,388.45 and 114,934.26

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Solution

The fourth proportional to 123,409.83, 170,388.45 and 114,934.26 is: 158,686.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,409.83 : 170,388.45 = 114,934.26 : x
  2. Step 2: Convert to fraction form
    123,409.83/170,388.45 = 114,934.26/x
  3. Step 3: Cross multiply
    123,409.83x = 170,388.45 × 114,934.26
  4. Step 4: Simplify right side
    123,409.83x = 19,583,470,413.30
  5. Step 5: Solve for x
    x = 19,583,470,413.30/123,409.83
  6. Step 6: Final answer
    x = 158,686.47

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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.