Home / 129,749.60-194,689.20-73,632.80

Finding the Fourth Proportional to 129,749.60, 194,689.20 and 73,632.80

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Solution

The fourth proportional to 129,749.60, 194,689.20 and 73,632.80 is: 110,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,749.60 : 194,689.20 = 73,632.80 : x
  2. Step 2: Convert to fraction form
    129,749.60/194,689.20 = 73,632.80/x
  3. Step 3: Cross multiply
    129,749.60x = 194,689.20 × 73,632.80
  4. Step 4: Simplify right side
    129,749.60x = 14,335,510,925.76
  5. Step 5: Solve for x
    x = 14,335,510,925.76/129,749.60
  6. Step 6: Final answer
    x = 110,485.97

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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.