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Finding the Fourth Proportional to 155,372, 214,413.60 and 88,304

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Solution

The fourth proportional to 155,372, 214,413.60 and 88,304 is: 121,859.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,372 : 214,413.60 = 88,304 : x
  2. Step 2: Convert to fraction form
    155,372/214,413.60 = 88,304/x
  3. Step 3: Cross multiply
    155,372x = 214,413.60 × 88,304
  4. Step 4: Simplify right side
    155,372x = 18,933,578,534.40
  5. Step 5: Solve for x
    x = 18,933,578,534.40/155,372
  6. Step 6: Final answer
    x = 121,859.66

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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.