Home / 105,931.58-146,280.46-79,027.36

Finding the Fourth Proportional to 105,931.58, 146,280.46 and 79,027.36

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Solution

The fourth proportional to 105,931.58, 146,280.46 and 79,027.36 is: 109,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,931.58 : 146,280.46 = 79,027.36 : x
  2. Step 2: Convert to fraction form
    105,931.58/146,280.46 = 79,027.36/x
  3. Step 3: Cross multiply
    105,931.58x = 146,280.46 × 79,027.36
  4. Step 4: Simplify right side
    105,931.58x = 11,560,158,573.39
  5. Step 5: Solve for x
    x = 11,560,158,573.39/105,931.58
  6. Step 6: Final answer
    x = 109,128.54

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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.