Home / 103,990.22-143,506.08-58,668.20

Finding the Fourth Proportional to 103,990.22, 143,506.08 and 58,668.20

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Solution

The fourth proportional to 103,990.22, 143,506.08 and 58,668.20 is: 80,961.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,990.22 : 143,506.08 = 58,668.20 : x
  2. Step 2: Convert to fraction form
    103,990.22/143,506.08 = 58,668.20/x
  3. Step 3: Cross multiply
    103,990.22x = 143,506.08 × 58,668.20
  4. Step 4: Simplify right side
    103,990.22x = 8,419,243,402.66
  5. Step 5: Solve for x
    x = 8,419,243,402.66/103,990.22
  6. Step 6: Final answer
    x = 80,961.88

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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.