Home / 154,405.26-213,083.04-86,421.66

Finding the Fourth Proportional to 154,405.26, 213,083.04 and 86,421.66

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Solution

The fourth proportional to 154,405.26, 213,083.04 and 86,421.66 is: 119,264.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,405.26 : 213,083.04 = 86,421.66 : x
  2. Step 2: Convert to fraction form
    154,405.26/213,083.04 = 86,421.66/x
  3. Step 3: Cross multiply
    154,405.26x = 213,083.04 × 86,421.66
  4. Step 4: Simplify right side
    154,405.26x = 18,414,990,034.65
  5. Step 5: Solve for x
    x = 18,414,990,034.65/154,405.26
  6. Step 6: Final answer
    x = 119,264.01

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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.