Home / 141,986.64-195,933.64-78,311.76

Finding the Fourth Proportional to 141,986.64, 195,933.64 and 78,311.76

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Solution

The fourth proportional to 141,986.64, 195,933.64 and 78,311.76 is: 108,065.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,986.64 : 195,933.64 = 78,311.76 : x
  2. Step 2: Convert to fraction form
    141,986.64/195,933.64 = 78,311.76/x
  3. Step 3: Cross multiply
    141,986.64x = 195,933.64 × 78,311.76
  4. Step 4: Simplify right side
    141,986.64x = 15,343,908,191.61
  5. Step 5: Solve for x
    x = 15,343,908,191.61/141,986.64
  6. Step 6: Final answer
    x = 108,065.86

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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.