Home / 144,000.81-198,725.89-78,593.21

Finding the Fourth Proportional to 144,000.81, 198,725.89 and 78,593.21

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Solution

The fourth proportional to 144,000.81, 198,725.89 and 78,593.21 is: 108,461.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,000.81 : 198,725.89 = 78,593.21 : x
  2. Step 2: Convert to fraction form
    144,000.81/198,725.89 = 78,593.21/x
  3. Step 3: Cross multiply
    144,000.81x = 198,725.89 × 78,593.21
  4. Step 4: Simplify right side
    144,000.81x = 15,618,505,605.21
  5. Step 5: Solve for x
    x = 15,618,505,605.21/144,000.81
  6. Step 6: Final answer
    x = 108,461.23

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1.5x scale

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.