Home / 123,350.45-170,225.15-72,360.54

Finding the Fourth Proportional to 123,350.45, 170,225.15 and 72,360.54

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Solution

The fourth proportional to 123,350.45, 170,225.15 and 72,360.54 is: 99,858.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,350.45 : 170,225.15 = 72,360.54 : x
  2. Step 2: Convert to fraction form
    123,350.45/170,225.15 = 72,360.54/x
  3. Step 3: Cross multiply
    123,350.45x = 170,225.15 × 72,360.54
  4. Step 4: Simplify right side
    123,350.45x = 12,317,583,413.78
  5. Step 5: Solve for x
    x = 12,317,583,413.78/123,350.45
  6. Step 6: Final answer
    x = 99,858.44

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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.