Home / 103,989.60-143,523.29-58,680.43

Finding the Fourth Proportional to 103,989.60, 143,523.29 and 58,680.43

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Solution

The fourth proportional to 103,989.60, 143,523.29 and 58,680.43 is: 80,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,989.60 : 143,523.29 = 58,680.43 : x
  2. Step 2: Convert to fraction form
    103,989.60/143,523.29 = 58,680.43/x
  3. Step 3: Cross multiply
    103,989.60x = 143,523.29 × 58,680.43
  4. Step 4: Simplify right side
    103,989.60x = 8,422,008,160.11
  5. Step 5: Solve for x
    x = 8,422,008,160.11/103,989.60
  6. Step 6: Final answer
    x = 80,988.95

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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.