Home / 120,128.40-180,194.76-37,020.24

Finding the Fourth Proportional to 120,128.40, 180,194.76 and 37,020.24

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Solution

The fourth proportional to 120,128.40, 180,194.76 and 37,020.24 is: 55,531.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,128.40 : 180,194.76 = 37,020.24 : x
  2. Step 2: Convert to fraction form
    120,128.40/180,194.76 = 37,020.24/x
  3. Step 3: Cross multiply
    120,128.40x = 180,194.76 × 37,020.24
  4. Step 4: Simplify right side
    120,128.40x = 6,670,853,261.94
  5. Step 5: Solve for x
    x = 6,670,853,261.94/120,128.40
  6. Step 6: Final answer
    x = 55,531.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.