Home / 131,409.10-197,113.65-100,305.10

Finding the Fourth Proportional to 131,409.10, 197,113.65 and 100,305.10

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Solution

The fourth proportional to 131,409.10, 197,113.65 and 100,305.10 is: 150,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,409.10 : 197,113.65 = 100,305.10 : x
  2. Step 2: Convert to fraction form
    131,409.10/197,113.65 = 100,305.10/x
  3. Step 3: Cross multiply
    131,409.10x = 197,113.65 × 100,305.10
  4. Step 4: Simplify right side
    131,409.10x = 19,771,504,374.62
  5. Step 5: Solve for x
    x = 19,771,504,374.62/131,409.10
  6. Step 6: Final answer
    x = 150,457.65

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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.