Home / 103,698.43-143,114.55-63,438.95

Finding the Fourth Proportional to 103,698.43, 143,114.55 and 63,438.95

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Solution

The fourth proportional to 103,698.43, 143,114.55 and 63,438.95 is: 87,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,698.43 : 143,114.55 = 63,438.95 : x
  2. Step 2: Convert to fraction form
    103,698.43/143,114.55 = 63,438.95/x
  3. Step 3: Cross multiply
    103,698.43x = 143,114.55 × 63,438.95
  4. Step 4: Simplify right side
    103,698.43x = 9,079,036,096.59
  5. Step 5: Solve for x
    x = 9,079,036,096.59/103,698.43
  6. Step 6: Final answer
    x = 87,552.30

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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.