Home / 104,138.56-143,711.58-56,391.76

Finding the Fourth Proportional to 104,138.56, 143,711.58 and 56,391.76

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Solution

The fourth proportional to 104,138.56, 143,711.58 and 56,391.76 is: 77,820.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,138.56 : 143,711.58 = 56,391.76 : x
  2. Step 2: Convert to fraction form
    104,138.56/143,711.58 = 56,391.76/x
  3. Step 3: Cross multiply
    104,138.56x = 143,711.58 × 56,391.76
  4. Step 4: Simplify right side
    104,138.56x = 8,104,148,928.58
  5. Step 5: Solve for x
    x = 8,104,148,928.58/104,138.56
  6. Step 6: Final answer
    x = 77,820.83

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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.