Home / 103,559.05-142,912.32-57,619.36

Finding the Fourth Proportional to 103,559.05, 142,912.32 and 57,619.36

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Solution

The fourth proportional to 103,559.05, 142,912.32 and 57,619.36 is: 79,515.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,559.05 : 142,912.32 = 57,619.36 : x
  2. Step 2: Convert to fraction form
    103,559.05/142,912.32 = 57,619.36/x
  3. Step 3: Cross multiply
    103,559.05x = 142,912.32 × 57,619.36
  4. Step 4: Simplify right side
    103,559.05x = 8,234,516,414.52
  5. Step 5: Solve for x
    x = 8,234,516,414.52/103,559.05
  6. Step 6: Final answer
    x = 79,515.18

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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.