Home / 133,828.40-200,679.05-77,685.72

Finding the Fourth Proportional to 133,828.40, 200,679.05 and 77,685.72

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Solution

The fourth proportional to 133,828.40, 200,679.05 and 77,685.72 is: 116,491.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,828.40 : 200,679.05 = 77,685.72 : x
  2. Step 2: Convert to fraction form
    133,828.40/200,679.05 = 77,685.72/x
  3. Step 3: Cross multiply
    133,828.40x = 200,679.05 × 77,685.72
  4. Step 4: Simplify right side
    133,828.40x = 15,589,896,099.74
  5. Step 5: Solve for x
    x = 15,589,896,099.74/133,828.40
  6. Step 6: Final answer
    x = 116,491.69

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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.