Home / 89,745.60-134,618.40-72,249.60

Finding the Fourth Proportional to 89,745.60, 134,618.40 and 72,249.60

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Solution

The fourth proportional to 89,745.60, 134,618.40 and 72,249.60 is: 108,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,745.60 : 134,618.40 = 72,249.60 : x
  2. Step 2: Convert to fraction form
    89,745.60/134,618.40 = 72,249.60/x
  3. Step 3: Cross multiply
    89,745.60x = 134,618.40 × 72,249.60
  4. Step 4: Simplify right side
    89,745.60x = 9,726,125,552.64
  5. Step 5: Solve for x
    x = 9,726,125,552.64/89,745.60
  6. Step 6: Final answer
    x = 108,374.40

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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.