Home / 154,442.27-213,120.45-86,447.81

Finding the Fourth Proportional to 154,442.27, 213,120.45 and 86,447.81

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Solution

The fourth proportional to 154,442.27, 213,120.45 and 86,447.81 is: 119,292.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,442.27 : 213,120.45 = 86,447.81 : x
  2. Step 2: Convert to fraction form
    154,442.27/213,120.45 = 86,447.81/x
  3. Step 3: Cross multiply
    154,442.27x = 213,120.45 × 86,447.81
  4. Step 4: Simplify right side
    154,442.27x = 18,423,795,103.11
  5. Step 5: Solve for x
    x = 18,423,795,103.11/154,442.27
  6. Step 6: Final answer
    x = 119,292.44

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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.