Home / 130,956.75-180,711.81-77,229.45

Finding the Fourth Proportional to 130,956.75, 180,711.81 and 77,229.45

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Solution

The fourth proportional to 130,956.75, 180,711.81 and 77,229.45 is: 106,571.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,956.75 : 180,711.81 = 77,229.45 : x
  2. Step 2: Convert to fraction form
    130,956.75/180,711.81 = 77,229.45/x
  3. Step 3: Cross multiply
    130,956.75x = 180,711.81 × 77,229.45
  4. Step 4: Simplify right side
    130,956.75x = 13,956,273,694.80
  5. Step 5: Solve for x
    x = 13,956,273,694.80/130,956.75
  6. Step 6: Final answer
    x = 106,571.63

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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.