Home / 75,427.20-113,140.80-67,262.40

Finding the Fourth Proportional to 75,427.20, 113,140.80 and 67,262.40

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Solution

The fourth proportional to 75,427.20, 113,140.80 and 67,262.40 is: 100,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,427.20 : 113,140.80 = 67,262.40 : x
  2. Step 2: Convert to fraction form
    75,427.20/113,140.80 = 67,262.40/x
  3. Step 3: Cross multiply
    75,427.20x = 113,140.80 × 67,262.40
  4. Step 4: Simplify right side
    75,427.20x = 7,610,121,745.92
  5. Step 5: Solve for x
    x = 7,610,121,745.92/75,427.20
  6. Step 6: Final answer
    x = 100,893.60

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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.