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Finding the Fourth Proportional to 144,136.80, 198,468.44 and 130,620.08

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Solution

The fourth proportional to 144,136.80, 198,468.44 and 130,620.08 is: 179,856.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,136.80 : 198,468.44 = 130,620.08 : x
  2. Step 2: Convert to fraction form
    144,136.80/198,468.44 = 130,620.08/x
  3. Step 3: Cross multiply
    144,136.80x = 198,468.44 × 130,620.08
  4. Step 4: Simplify right side
    144,136.80x = 25,923,963,510.28
  5. Step 5: Solve for x
    x = 25,923,963,510.28/144,136.80
  6. Step 6: Final answer
    x = 179,856.66

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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.