Home / 135,863.24-187,426.32-81,389.12

Finding the Fourth Proportional to 135,863.24, 187,426.32 and 81,389.12

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Solution

The fourth proportional to 135,863.24, 187,426.32 and 81,389.12 is: 112,278.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,863.24 : 187,426.32 = 81,389.12 : x
  2. Step 2: Convert to fraction form
    135,863.24/187,426.32 = 81,389.12/x
  3. Step 3: Cross multiply
    135,863.24x = 187,426.32 × 81,389.12
  4. Step 4: Simplify right side
    135,863.24x = 15,254,463,249.64
  5. Step 5: Solve for x
    x = 15,254,463,249.64/135,863.24
  6. Step 6: Final answer
    x = 112,278.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.