Home / 81,299.09-121,960.13-25,144.12

Finding the Fourth Proportional to 81,299.09, 121,960.13 and 25,144.12

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Solution

The fourth proportional to 81,299.09, 121,960.13 and 25,144.12 is: 37,719.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,299.09 : 121,960.13 = 25,144.12 : x
  2. Step 2: Convert to fraction form
    81,299.09/121,960.13 = 25,144.12/x
  3. Step 3: Cross multiply
    81,299.09x = 121,960.13 × 25,144.12
  4. Step 4: Simplify right side
    81,299.09x = 3,066,580,312.10
  5. Step 5: Solve for x
    x = 3,066,580,312.10/81,299.09
  6. Step 6: Final answer
    x = 37,719.74

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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.