Home / 135,622.41-187,156.02-78,257.23

Finding the Fourth Proportional to 135,622.41, 187,156.02 and 78,257.23

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Solution

The fourth proportional to 135,622.41, 187,156.02 and 78,257.23 is: 107,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,622.41 : 187,156.02 = 78,257.23 : x
  2. Step 2: Convert to fraction form
    135,622.41/187,156.02 = 78,257.23/x
  3. Step 3: Cross multiply
    135,622.41x = 187,156.02 × 78,257.23
  4. Step 4: Simplify right side
    135,622.41x = 14,646,310,767.24
  5. Step 5: Solve for x
    x = 14,646,310,767.24/135,622.41
  6. Step 6: Final answer
    x = 107,993.30

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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.