Home / 103,942.40-143,439.81-58,620.77

Finding the Fourth Proportional to 103,942.40, 143,439.81 and 58,620.77

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Solution

The fourth proportional to 103,942.40, 143,439.81 and 58,620.77 is: 80,896.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,942.40 : 143,439.81 = 58,620.77 : x
  2. Step 2: Convert to fraction form
    103,942.40/143,439.81 = 58,620.77/x
  3. Step 3: Cross multiply
    103,942.40x = 143,439.81 × 58,620.77
  4. Step 4: Simplify right side
    103,942.40x = 8,408,552,444.89
  5. Step 5: Solve for x
    x = 8,408,552,444.89/103,942.40
  6. Step 6: Final answer
    x = 80,896.27

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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.