Home / 129,659,331.87-178,930,413.38-70,120,626.68

Finding the Fourth Proportional to 129,659,331.87, 178,930,413.38 and 70,120,626.68

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Solution

The fourth proportional to 129,659,331.87, 178,930,413.38 and 70,120,626.68 is: 96,766,754.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,659,331.87 : 178,930,413.38 = 70,120,626.68 : x
  2. Step 2: Convert to fraction form
    129,659,331.87/178,930,413.38 = 70,120,626.68/x
  3. Step 3: Cross multiply
    129,659,331.87x = 178,930,413.38 × 70,120,626.68
  4. Step 4: Simplify right side
    129,659,331.87x = 12,546,712,717,966,456
  5. Step 5: Solve for x
    x = 12,546,712,717,966,456/129,659,331.87
  6. Step 6: Final answer
    x = 96,766,754.37

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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.