Home / 343,448.12-515,113.86-90,731.36

Finding the Fourth Proportional to 343,448.12, 515,113.86 and 90,731.36

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Solution

The fourth proportional to 343,448.12, 515,113.86 and 90,731.36 is: 136,081.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,448.12 : 515,113.86 = 90,731.36 : x
  2. Step 2: Convert to fraction form
    343,448.12/515,113.86 = 90,731.36/x
  3. Step 3: Cross multiply
    343,448.12x = 515,113.86 × 90,731.36
  4. Step 4: Simplify right side
    343,448.12x = 46,736,981,072.65
  5. Step 5: Solve for x
    x = 46,736,981,072.65/343,448.12
  6. Step 6: Final answer
    x = 136,081.63

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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.