Home / 118,834.70-163,989.30-65,118.56

Finding the Fourth Proportional to 118,834.70, 163,989.30 and 65,118.56

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Solution

The fourth proportional to 118,834.70, 163,989.30 and 65,118.56 is: 89,862.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,834.70 : 163,989.30 = 65,118.56 : x
  2. Step 2: Convert to fraction form
    118,834.70/163,989.30 = 65,118.56/x
  3. Step 3: Cross multiply
    118,834.70x = 163,989.30 × 65,118.56
  4. Step 4: Simplify right side
    118,834.70x = 10,678,747,071.41
  5. Step 5: Solve for x
    x = 10,678,747,071.41/118,834.70
  6. Step 6: Final answer
    x = 89,862.20

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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.