Home / 78,255.68-117,383.52-19,090.95

Finding the Fourth Proportional to 78,255.68, 117,383.52 and 19,090.95

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Solution

The fourth proportional to 78,255.68, 117,383.52 and 19,090.95 is: 28,636.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,255.68 : 117,383.52 = 19,090.95 : x
  2. Step 2: Convert to fraction form
    78,255.68/117,383.52 = 19,090.95/x
  3. Step 3: Cross multiply
    78,255.68x = 117,383.52 × 19,090.95
  4. Step 4: Simplify right side
    78,255.68x = 2,240,962,911.14
  5. Step 5: Solve for x
    x = 2,240,962,911.14/78,255.68
  6. Step 6: Final answer
    x = 28,636.43

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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.