Home / 103,638.42-143,032.62-58,327.42

Finding the Fourth Proportional to 103,638.42, 143,032.62 and 58,327.42

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Solution

The fourth proportional to 103,638.42, 143,032.62 and 58,327.42 is: 80,498.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.42 : 143,032.62 = 58,327.42 : x
  2. Step 2: Convert to fraction form
    103,638.42/143,032.62 = 58,327.42/x
  3. Step 3: Cross multiply
    103,638.42x = 143,032.62 × 58,327.42
  4. Step 4: Simplify right side
    103,638.42x = 8,342,723,700.44
  5. Step 5: Solve for x
    x = 8,342,723,700.44/103,638.42
  6. Step 6: Final answer
    x = 80,498.37

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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.