Home / 121,900.96-168,241.26-74,145.07

Finding the Fourth Proportional to 121,900.96, 168,241.26 and 74,145.07

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Solution

The fourth proportional to 121,900.96, 168,241.26 and 74,145.07 is: 102,331.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,900.96 : 168,241.26 = 74,145.07 : x
  2. Step 2: Convert to fraction form
    121,900.96/168,241.26 = 74,145.07/x
  3. Step 3: Cross multiply
    121,900.96x = 168,241.26 × 74,145.07
  4. Step 4: Simplify right side
    121,900.96x = 12,474,259,999.59
  5. Step 5: Solve for x
    x = 12,474,259,999.59/121,900.96
  6. Step 6: Final answer
    x = 102,331.11

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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.