Home / 131,490.40-197,235.60-91,249.60

Finding the Fourth Proportional to 131,490.40, 197,235.60 and 91,249.60

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Solution

The fourth proportional to 131,490.40, 197,235.60 and 91,249.60 is: 136,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,490.40 : 197,235.60 = 91,249.60 : x
  2. Step 2: Convert to fraction form
    131,490.40/197,235.60 = 91,249.60/x
  3. Step 3: Cross multiply
    131,490.40x = 197,235.60 × 91,249.60
  4. Step 4: Simplify right side
    131,490.40x = 17,997,669,605.76
  5. Step 5: Solve for x
    x = 17,997,669,605.76/131,490.40
  6. Step 6: Final answer
    x = 136,874.40

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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.