Home / 81,016.40-121,524.60-73,758.80

Finding the Fourth Proportional to 81,016.40, 121,524.60 and 73,758.80

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Solution

The fourth proportional to 81,016.40, 121,524.60 and 73,758.80 is: 110,638.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,016.40 : 121,524.60 = 73,758.80 : x
  2. Step 2: Convert to fraction form
    81,016.40/121,524.60 = 73,758.80/x
  3. Step 3: Cross multiply
    81,016.40x = 121,524.60 × 73,758.80
  4. Step 4: Simplify right side
    81,016.40x = 8,963,508,666.48
  5. Step 5: Solve for x
    x = 8,963,508,666.48/81,016.40
  6. Step 6: Final answer
    x = 110,638.20

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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.