Home / 103,512.20-142,858.76-57,576.42

Finding the Fourth Proportional to 103,512.20, 142,858.76 and 57,576.42

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Solution

The fourth proportional to 103,512.20, 142,858.76 and 57,576.42 is: 79,462.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,512.20 : 142,858.76 = 57,576.42 : x
  2. Step 2: Convert to fraction form
    103,512.20/142,858.76 = 57,576.42/x
  3. Step 3: Cross multiply
    103,512.20x = 142,858.76 × 57,576.42
  4. Step 4: Simplify right side
    103,512.20x = 8,225,295,678.56
  5. Step 5: Solve for x
    x = 8,225,295,678.56/103,512.20
  6. Step 6: Final answer
    x = 79,462.09

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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.