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Finding the Fourth Proportional to 180,552.60, 270,828.90 and 128,064.60

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Solution

The fourth proportional to 180,552.60, 270,828.90 and 128,064.60 is: 192,096.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,552.60 : 270,828.90 = 128,064.60 : x
  2. Step 2: Convert to fraction form
    180,552.60/270,828.90 = 128,064.60/x
  3. Step 3: Cross multiply
    180,552.60x = 270,828.90 × 128,064.60
  4. Step 4: Simplify right side
    180,552.60x = 34,683,594,746.94
  5. Step 5: Solve for x
    x = 34,683,594,746.94/180,552.60
  6. Step 6: Final answer
    x = 192,096.90

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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.