Home / 120,133.31-165,703.66-72,336.83

Finding the Fourth Proportional to 120,133.31, 165,703.66 and 72,336.83

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Solution

The fourth proportional to 120,133.31, 165,703.66 and 72,336.83 is: 99,776.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,133.31 : 165,703.66 = 72,336.83 : x
  2. Step 2: Convert to fraction form
    120,133.31/165,703.66 = 72,336.83/x
  3. Step 3: Cross multiply
    120,133.31x = 165,703.66 × 72,336.83
  4. Step 4: Simplify right side
    120,133.31x = 11,986,476,474.44
  5. Step 5: Solve for x
    x = 11,986,476,474.44/120,133.31
  6. Step 6: Final answer
    x = 99,776.46

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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.