Home / 120,288.96-165,999.08-66,577.68

Finding the Fourth Proportional to 120,288.96, 165,999.08 and 66,577.68

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Solution

The fourth proportional to 120,288.96, 165,999.08 and 66,577.68 is: 91,877.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,288.96 : 165,999.08 = 66,577.68 : x
  2. Step 2: Convert to fraction form
    120,288.96/165,999.08 = 66,577.68/x
  3. Step 3: Cross multiply
    120,288.96x = 165,999.08 × 66,577.68
  4. Step 4: Simplify right side
    120,288.96x = 11,051,833,628.53
  5. Step 5: Solve for x
    x = 11,051,833,628.53/120,288.96
  6. Step 6: Final answer
    x = 91,877.37

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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.