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Finding the Fourth Proportional to 134,408.70, 185,406.75 and 84,020.22

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Solution

The fourth proportional to 134,408.70, 185,406.75 and 84,020.22 is: 115,899.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,408.70 : 185,406.75 = 84,020.22 : x
  2. Step 2: Convert to fraction form
    134,408.70/185,406.75 = 84,020.22/x
  3. Step 3: Cross multiply
    134,408.70x = 185,406.75 × 84,020.22
  4. Step 4: Simplify right side
    134,408.70x = 15,577,915,924.49
  5. Step 5: Solve for x
    x = 15,577,915,924.49/134,408.70
  6. Step 6: Final answer
    x = 115,899.61

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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.