Home / 129,935.70-194,903.55-79,853.40

Finding the Fourth Proportional to 129,935.70, 194,903.55 and 79,853.40

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Solution

The fourth proportional to 129,935.70, 194,903.55 and 79,853.40 is: 119,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,935.70 : 194,903.55 = 79,853.40 : x
  2. Step 2: Convert to fraction form
    129,935.70/194,903.55 = 79,853.40/x
  3. Step 3: Cross multiply
    129,935.70x = 194,903.55 × 79,853.40
  4. Step 4: Simplify right side
    129,935.70x = 15,563,711,139.57
  5. Step 5: Solve for x
    x = 15,563,711,139.57/129,935.70
  6. Step 6: Final answer
    x = 119,780.10

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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.