Home / 78,158.24-117,237.48-18,993.96

Finding the Fourth Proportional to 78,158.24, 117,237.48 and 18,993.96

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Solution

The fourth proportional to 78,158.24, 117,237.48 and 18,993.96 is: 28,490.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,158.24 : 117,237.48 = 18,993.96 : x
  2. Step 2: Convert to fraction form
    78,158.24/117,237.48 = 18,993.96/x
  3. Step 3: Cross multiply
    78,158.24x = 117,237.48 × 18,993.96
  4. Step 4: Simplify right side
    78,158.24x = 2,226,804,005.62
  5. Step 5: Solve for x
    x = 2,226,804,005.62/78,158.24
  6. Step 6: Final answer
    x = 28,490.97

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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.