Home / 120,285.48-165,991.64-66,570.52

Finding the Fourth Proportional to 120,285.48, 165,991.64 and 66,570.52

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Solution

The fourth proportional to 120,285.48, 165,991.64 and 66,570.52 is: 91,866.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,285.48 : 165,991.64 = 66,570.52 : x
  2. Step 2: Convert to fraction form
    120,285.48/165,991.64 = 66,570.52/x
  3. Step 3: Cross multiply
    120,285.48x = 165,991.64 × 66,570.52
  4. Step 4: Simplify right side
    120,285.48x = 11,050,149,790.45
  5. Step 5: Solve for x
    x = 11,050,149,790.45/120,285.48
  6. Step 6: Final answer
    x = 91,866.03

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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.