Home / 126,565.72-189,877.40-67,370.20

Finding the Fourth Proportional to 126,565.72, 189,877.40 and 67,370.20

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Solution

The fourth proportional to 126,565.72, 189,877.40 and 67,370.20 is: 101,070.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,565.72 : 189,877.40 = 67,370.20 : x
  2. Step 2: Convert to fraction form
    126,565.72/189,877.40 = 67,370.20/x
  3. Step 3: Cross multiply
    126,565.72x = 189,877.40 × 67,370.20
  4. Step 4: Simplify right side
    126,565.72x = 12,792,078,413.48
  5. Step 5: Solve for x
    x = 12,792,078,413.48/126,565.72
  6. Step 6: Final answer
    x = 101,070.64

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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.