Home / 189,413.28-261,391.80-103,372.92

Finding the Fourth Proportional to 189,413.28, 261,391.80 and 103,372.92

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Solution

The fourth proportional to 189,413.28, 261,391.80 and 103,372.92 is: 142,655.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,413.28 : 261,391.80 = 103,372.92 : x
  2. Step 2: Convert to fraction form
    189,413.28/261,391.80 = 103,372.92/x
  3. Step 3: Cross multiply
    189,413.28x = 261,391.80 × 103,372.92
  4. Step 4: Simplify right side
    189,413.28x = 27,020,833,630.06
  5. Step 5: Solve for x
    x = 27,020,833,630.06/189,413.28
  6. Step 6: Final answer
    x = 142,655.43

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1.5x scale

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.