Home / 120,276.63-165,979.26-66,558.45

Finding the Fourth Proportional to 120,276.63, 165,979.26 and 66,558.45

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Solution

The fourth proportional to 120,276.63, 165,979.26 and 66,558.45 is: 91,849.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,276.63 : 165,979.26 = 66,558.45 : x
  2. Step 2: Convert to fraction form
    120,276.63/165,979.26 = 66,558.45/x
  3. Step 3: Cross multiply
    120,276.63x = 165,979.26 × 66,558.45
  4. Step 4: Simplify right side
    120,276.63x = 11,047,322,277.75
  5. Step 5: Solve for x
    x = 11,047,322,277.75/120,276.63
  6. Step 6: Final answer
    x = 91,849.28

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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.