Home / 189,413.10-261,391.58-103,372.76

Finding the Fourth Proportional to 189,413.10, 261,391.58 and 103,372.76

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Solution

The fourth proportional to 189,413.10, 261,391.58 and 103,372.76 is: 142,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,413.10 : 261,391.58 = 103,372.76 : x
  2. Step 2: Convert to fraction form
    189,413.10/261,391.58 = 103,372.76/x
  3. Step 3: Cross multiply
    189,413.10x = 261,391.58 × 103,372.76
  4. Step 4: Simplify right side
    189,413.10x = 27,020,767,241.54
  5. Step 5: Solve for x
    x = 27,020,767,241.54/189,413.10
  6. Step 6: Final answer
    x = 142,655.22

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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.