Home / 144,007.68-198,729.84-80,345.36

Finding the Fourth Proportional to 144,007.68, 198,729.84 and 80,345.36

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Solution

The fourth proportional to 144,007.68, 198,729.84 and 80,345.36 is: 110,876.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,007.68 : 198,729.84 = 80,345.36 : x
  2. Step 2: Convert to fraction form
    144,007.68/198,729.84 = 80,345.36/x
  3. Step 3: Cross multiply
    144,007.68x = 198,729.84 × 80,345.36
  4. Step 4: Simplify right side
    144,007.68x = 15,967,020,537.54
  5. Step 5: Solve for x
    x = 15,967,020,537.54/144,007.68
  6. Step 6: Final answer
    x = 110,876.17

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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.