Home / 91,245.40-136,863.96-31,279.20

Finding the Fourth Proportional to 91,245.40, 136,863.96 and 31,279.20

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Solution

The fourth proportional to 91,245.40, 136,863.96 and 31,279.20 is: 46,917.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,245.40 : 136,863.96 = 31,279.20 : x
  2. Step 2: Convert to fraction form
    91,245.40/136,863.96 = 31,279.20/x
  3. Step 3: Cross multiply
    91,245.40x = 136,863.96 × 31,279.20
  4. Step 4: Simplify right side
    91,245.40x = 4,280,994,652.96
  5. Step 5: Solve for x
    x = 4,280,994,652.96/91,245.40
  6. Step 6: Final answer
    x = 46,917.38

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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.