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Finding the Fourth Proportional to 173,413.29, 259,962.30 and 66,729.20

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Solution

The fourth proportional to 173,413.29, 259,962.30 and 66,729.20 is: 100,033.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,413.29 : 259,962.30 = 66,729.20 : x
  2. Step 2: Convert to fraction form
    173,413.29/259,962.30 = 66,729.20/x
  3. Step 3: Cross multiply
    173,413.29x = 259,962.30 × 66,729.20
  4. Step 4: Simplify right side
    173,413.29x = 17,347,075,009.35
  5. Step 5: Solve for x
    x = 17,347,075,009.35/173,413.29
  6. Step 6: Final answer
    x = 100,033.13

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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.