Home / 86,825.38-130,025.67-78,410.92

Finding the Fourth Proportional to 86,825.38, 130,025.67 and 78,410.92

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Solution

The fourth proportional to 86,825.38, 130,025.67 and 78,410.92 is: 117,424.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,825.38 : 130,025.67 = 78,410.92 : x
  2. Step 2: Convert to fraction form
    86,825.38/130,025.67 = 78,410.92/x
  3. Step 3: Cross multiply
    86,825.38x = 130,025.67 × 78,410.92
  4. Step 4: Simplify right side
    86,825.38x = 10,195,432,408.32
  5. Step 5: Solve for x
    x = 10,195,432,408.32/86,825.38
  6. Step 6: Final answer
    x = 117,424.56

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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.