Home / 101,405.60-139,917.84-58,942.40

Finding the Fourth Proportional to 101,405.60, 139,917.84 and 58,942.40

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Solution

The fourth proportional to 101,405.60, 139,917.84 and 58,942.40 is: 81,327.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,405.60 : 139,917.84 = 58,942.40 : x
  2. Step 2: Convert to fraction form
    101,405.60/139,917.84 = 58,942.40/x
  3. Step 3: Cross multiply
    101,405.60x = 139,917.84 × 58,942.40
  4. Step 4: Simplify right side
    101,405.60x = 8,247,093,292.42
  5. Step 5: Solve for x
    x = 8,247,093,292.42/101,405.60
  6. Step 6: Final answer
    x = 81,327.79

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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.