Home / 78,140.29-117,208.82-18,976.27

Finding the Fourth Proportional to 78,140.29, 117,208.82 and 18,976.27

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Solution

The fourth proportional to 78,140.29, 117,208.82 and 18,976.27 is: 28,464.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,140.29 : 117,208.82 = 18,976.27 : x
  2. Step 2: Convert to fraction form
    78,140.29/117,208.82 = 18,976.27/x
  3. Step 3: Cross multiply
    78,140.29x = 117,208.82 × 18,976.27
  4. Step 4: Simplify right side
    78,140.29x = 2,224,186,119.82
  5. Step 5: Solve for x
    x = 2,224,186,119.82/78,140.29
  6. Step 6: Final answer
    x = 28,464.01

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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.