Home / 152,716.20-229,220.10-77,920.80

Finding the Fourth Proportional to 152,716.20, 229,220.10 and 77,920.80

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Solution

The fourth proportional to 152,716.20, 229,220.10 and 77,920.80 is: 116,955.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,716.20 : 229,220.10 = 77,920.80 : x
  2. Step 2: Convert to fraction form
    152,716.20/229,220.10 = 77,920.80/x
  3. Step 3: Cross multiply
    152,716.20x = 229,220.10 × 77,920.80
  4. Step 4: Simplify right side
    152,716.20x = 17,861,013,568.08
  5. Step 5: Solve for x
    x = 17,861,013,568.08/152,716.20
  6. Step 6: Final answer
    x = 116,955.59

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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.