Home / 103,986.91-143,501.94-56,240.26

Finding the Fourth Proportional to 103,986.91, 143,501.94 and 56,240.26

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Solution

The fourth proportional to 103,986.91, 143,501.94 and 56,240.26 is: 77,611.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,986.91 : 143,501.94 = 56,240.26 : x
  2. Step 2: Convert to fraction form
    103,986.91/143,501.94 = 56,240.26/x
  3. Step 3: Cross multiply
    103,986.91x = 143,501.94 × 56,240.26
  4. Step 4: Simplify right side
    103,986.91x = 8,070,585,417.39
  5. Step 5: Solve for x
    x = 8,070,585,417.39/103,986.91
  6. Step 6: Final answer
    x = 77,611.55

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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.