Home / 117,717.19-162,367.45-77,418.07

Finding the Fourth Proportional to 117,717.19, 162,367.45 and 77,418.07

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Solution

The fourth proportional to 117,717.19, 162,367.45 and 77,418.07 is: 106,782.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,717.19 : 162,367.45 = 77,418.07 : x
  2. Step 2: Convert to fraction form
    117,717.19/162,367.45 = 77,418.07/x
  3. Step 3: Cross multiply
    117,717.19x = 162,367.45 × 77,418.07
  4. Step 4: Simplify right side
    117,717.19x = 12,570,174,609.82
  5. Step 5: Solve for x
    x = 12,570,174,609.82/117,717.19
  6. Step 6: Final answer
    x = 106,782.83

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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.