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Finding the Fourth Proportional to 103,640.41, 143,023.77 and 58,928.41

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Solution

The fourth proportional to 103,640.41, 143,023.77 and 58,928.41 is: 81,321.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.41 : 143,023.77 = 58,928.41 : x
  2. Step 2: Convert to fraction form
    103,640.41/143,023.77 = 58,928.41/x
  3. Step 3: Cross multiply
    103,640.41x = 143,023.77 × 58,928.41
  4. Step 4: Simplify right side
    103,640.41x = 8,428,163,358.31
  5. Step 5: Solve for x
    x = 8,428,163,358.31/103,640.41
  6. Step 6: Final answer
    x = 81,321.21

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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.