Home / 135,790.91-187,413.98-79,202.28

Finding the Fourth Proportional to 135,790.91, 187,413.98 and 79,202.28

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Solution

The fourth proportional to 135,790.91, 187,413.98 and 79,202.28 is: 109,312.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,790.91 : 187,413.98 = 79,202.28 : x
  2. Step 2: Convert to fraction form
    135,790.91/187,413.98 = 79,202.28/x
  3. Step 3: Cross multiply
    135,790.91x = 187,413.98 × 79,202.28
  4. Step 4: Simplify right side
    135,790.91x = 14,843,614,123.86
  5. Step 5: Solve for x
    x = 14,843,614,123.86/135,790.91
  6. Step 6: Final answer
    x = 109,312.29

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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.