Home / 144,015.96-198,740.30-79,485.68

Finding the Fourth Proportional to 144,015.96, 198,740.30 and 79,485.68

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Solution

The fourth proportional to 144,015.96, 198,740.30 and 79,485.68 is: 109,689.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,015.96 : 198,740.30 = 79,485.68 : x
  2. Step 2: Convert to fraction form
    144,015.96/198,740.30 = 79,485.68/x
  3. Step 3: Cross multiply
    144,015.96x = 198,740.30 × 79,485.68
  4. Step 4: Simplify right side
    144,015.96x = 15,797,007,888.90
  5. Step 5: Solve for x
    x = 15,797,007,888.90/144,015.96
  6. Step 6: Final answer
    x = 109,689.29

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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.