Home / 78,133.63-117,201.18-18,969.82

Finding the Fourth Proportional to 78,133.63, 117,201.18 and 18,969.82

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Solution

The fourth proportional to 78,133.63, 117,201.18 and 18,969.82 is: 28,454.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133.63 : 117,201.18 = 18,969.82 : x
  2. Step 2: Convert to fraction form
    78,133.63/117,201.18 = 18,969.82/x
  3. Step 3: Cross multiply
    78,133.63x = 117,201.18 × 18,969.82
  4. Step 4: Simplify right side
    78,133.63x = 2,223,285,288.39
  5. Step 5: Solve for x
    x = 2,223,285,288.39/78,133.63
  6. Step 6: Final answer
    x = 28,454.91

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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.