Home / 106,820.36-160,090.38-78,608.36

Finding the Fourth Proportional to 106,820.36, 160,090.38 and 78,608.36

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Solution

The fourth proportional to 106,820.36, 160,090.38 and 78,608.36 is: 117,809.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,820.36 : 160,090.38 = 78,608.36 : x
  2. Step 2: Convert to fraction form
    106,820.36/160,090.38 = 78,608.36/x
  3. Step 3: Cross multiply
    106,820.36x = 160,090.38 × 78,608.36
  4. Step 4: Simplify right side
    106,820.36x = 12,584,442,223.58
  5. Step 5: Solve for x
    x = 12,584,442,223.58/106,820.36
  6. Step 6: Final answer
    x = 117,809.40

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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.