Home / 103,315.72-154,973.59-40,986.22

Finding the Fourth Proportional to 103,315.72, 154,973.59 and 40,986.22

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Solution

The fourth proportional to 103,315.72, 154,973.59 and 40,986.22 is: 61,479.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,315.72 : 154,973.59 = 40,986.22 : x
  2. Step 2: Convert to fraction form
    103,315.72/154,973.59 = 40,986.22/x
  3. Step 3: Cross multiply
    103,315.72x = 154,973.59 × 40,986.22
  4. Step 4: Simplify right side
    103,315.72x = 6,351,781,449.00
  5. Step 5: Solve for x
    x = 6,351,781,449.00/103,315.72
  6. Step 6: Final answer
    x = 61,479.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.