Home / 120,131.37-165,820.64-84,330.18

Finding the Fourth Proportional to 120,131.37, 165,820.64 and 84,330.18

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Solution

The fourth proportional to 120,131.37, 165,820.64 and 84,330.18 is: 116,403.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.37 : 165,820.64 = 84,330.18 : x
  2. Step 2: Convert to fraction form
    120,131.37/165,820.64 = 84,330.18/x
  3. Step 3: Cross multiply
    120,131.37x = 165,820.64 × 84,330.18
  4. Step 4: Simplify right side
    120,131.37x = 13,983,683,997.26
  5. Step 5: Solve for x
    x = 13,983,683,997.26/120,131.37
  6. Step 6: Final answer
    x = 116,403.27

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1.5x scale

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.