Home / 78,331.56-117,496.78-19,168.08

Finding the Fourth Proportional to 78,331.56, 117,496.78 and 19,168.08

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Solution

The fourth proportional to 78,331.56, 117,496.78 and 19,168.08 is: 28,751.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,331.56 : 117,496.78 = 19,168.08 : x
  2. Step 2: Convert to fraction form
    78,331.56/117,496.78 = 19,168.08/x
  3. Step 3: Cross multiply
    78,331.56x = 117,496.78 × 19,168.08
  4. Step 4: Simplify right side
    78,331.56x = 2,252,187,678.78
  5. Step 5: Solve for x
    x = 2,252,187,678.78/78,331.56
  6. Step 6: Final answer
    x = 28,751.98

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1.5x scale

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.