Home / 131,409.10-197,113.65-36,639.10

Finding the Fourth Proportional to 131,409.10, 197,113.65 and 36,639.10

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Solution

The fourth proportional to 131,409.10, 197,113.65 and 36,639.10 is: 54,958.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,409.10 : 197,113.65 = 36,639.10 : x
  2. Step 2: Convert to fraction form
    131,409.10/197,113.65 = 36,639.10/x
  3. Step 3: Cross multiply
    131,409.10x = 197,113.65 × 36,639.10
  4. Step 4: Simplify right side
    131,409.10x = 7,222,066,733.72
  5. Step 5: Solve for x
    x = 7,222,066,733.72/131,409.10
  6. Step 6: Final answer
    x = 54,958.65

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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.