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Finding the Fourth Proportional to 144,660.80, 216,832.80 and 51,118.40

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Solution

The fourth proportional to 144,660.80, 216,832.80 and 51,118.40 is: 76,621.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,660.80 : 216,832.80 = 51,118.40 : x
  2. Step 2: Convert to fraction form
    144,660.80/216,832.80 = 51,118.40/x
  3. Step 3: Cross multiply
    144,660.80x = 216,832.80 × 51,118.40
  4. Step 4: Simplify right side
    144,660.80x = 11,084,145,803.52
  5. Step 5: Solve for x
    x = 11,084,145,803.52/144,660.80
  6. Step 6: Final answer
    x = 76,621.63

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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.