Home / 86,408.10-129,612.15-82,325.70

Finding the Fourth Proportional to 86,408.10, 129,612.15 and 82,325.70

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Solution

The fourth proportional to 86,408.10, 129,612.15 and 82,325.70 is: 123,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,408.10 : 129,612.15 = 82,325.70 : x
  2. Step 2: Convert to fraction form
    86,408.10/129,612.15 = 82,325.70/x
  3. Step 3: Cross multiply
    86,408.10x = 129,612.15 × 82,325.70
  4. Step 4: Simplify right side
    86,408.10x = 10,670,410,977.26
  5. Step 5: Solve for x
    x = 10,670,410,977.26/86,408.10
  6. Step 6: Final answer
    x = 123,488.55

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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.