Home / 81,143.25-121,608.84-58,729.41

Finding the Fourth Proportional to 81,143.25, 121,608.84 and 58,729.41

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Solution

The fourth proportional to 81,143.25, 121,608.84 and 58,729.41 is: 88,017.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,143.25 : 121,608.84 = 58,729.41 : x
  2. Step 2: Convert to fraction form
    81,143.25/121,608.84 = 58,729.41/x
  3. Step 3: Cross multiply
    81,143.25x = 121,608.84 × 58,729.41
  4. Step 4: Simplify right side
    81,143.25x = 7,142,015,423.98
  5. Step 5: Solve for x
    x = 7,142,015,423.98/81,143.25
  6. Step 6: Final answer
    x = 88,017.37

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1.5x scale

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.