Home / 129,085.70-193,628.55-40,366.40

Finding the Fourth Proportional to 129,085.70, 193,628.55 and 40,366.40

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Solution

The fourth proportional to 129,085.70, 193,628.55 and 40,366.40 is: 60,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,085.70 : 193,628.55 = 40,366.40 : x
  2. Step 2: Convert to fraction form
    129,085.70/193,628.55 = 40,366.40/x
  3. Step 3: Cross multiply
    129,085.70x = 193,628.55 × 40,366.40
  4. Step 4: Simplify right side
    129,085.70x = 7,816,087,500.72
  5. Step 5: Solve for x
    x = 7,816,087,500.72/129,085.70
  6. Step 6: Final answer
    x = 60,549.60

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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.