Home / 102,782.71-141,879.36-66,981.52

Finding the Fourth Proportional to 102,782.71, 141,879.36 and 66,981.52

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Solution

The fourth proportional to 102,782.71, 141,879.36 and 66,981.52 is: 92,460.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,782.71 : 141,879.36 = 66,981.52 : x
  2. Step 2: Convert to fraction form
    102,782.71/141,879.36 = 66,981.52/x
  3. Step 3: Cross multiply
    102,782.71x = 141,879.36 × 66,981.52
  4. Step 4: Simplify right side
    102,782.71x = 9,503,295,189.43
  5. Step 5: Solve for x
    x = 9,503,295,189.43/102,782.71
  6. Step 6: Final answer
    x = 92,460.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.