Home / 120,276.80-180,431.40-41,415.20

Finding the Fourth Proportional to 120,276.80, 180,431.40 and 41,415.20

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Solution

The fourth proportional to 120,276.80, 180,431.40 and 41,415.20 is: 62,128.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,276.80 : 180,431.40 = 41,415.20 : x
  2. Step 2: Convert to fraction form
    120,276.80/180,431.40 = 41,415.20/x
  3. Step 3: Cross multiply
    120,276.80x = 180,431.40 × 41,415.20
  4. Step 4: Simplify right side
    120,276.80x = 7,472,602,517.28
  5. Step 5: Solve for x
    x = 7,472,602,517.28/120,276.80
  6. Step 6: Final answer
    x = 62,128.38

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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.