Home / 103,661.21-143,050.88-57,720.54

Finding the Fourth Proportional to 103,661.21, 143,050.88 and 57,720.54

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Solution

The fourth proportional to 103,661.21, 143,050.88 and 57,720.54 is: 79,653.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,661.21 : 143,050.88 = 57,720.54 : x
  2. Step 2: Convert to fraction form
    103,661.21/143,050.88 = 57,720.54/x
  3. Step 3: Cross multiply
    103,661.21x = 143,050.88 × 57,720.54
  4. Step 4: Simplify right side
    103,661.21x = 8,256,974,185.38
  5. Step 5: Solve for x
    x = 8,256,974,185.38/103,661.21
  6. Step 6: Final answer
    x = 79,653.46

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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.