Home / 158,442.75-218,651.13-86,823.09

Finding the Fourth Proportional to 158,442.75, 218,651.13 and 86,823.09

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Solution

The fourth proportional to 158,442.75, 218,651.13 and 86,823.09 is: 119,815.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,442.75 : 218,651.13 = 86,823.09 : x
  2. Step 2: Convert to fraction form
    158,442.75/218,651.13 = 86,823.09/x
  3. Step 3: Cross multiply
    158,442.75x = 218,651.13 × 86,823.09
  4. Step 4: Simplify right side
    158,442.75x = 18,983,966,738.59
  5. Step 5: Solve for x
    x = 18,983,966,738.59/158,442.75
  6. Step 6: Final answer
    x = 119,815.94

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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.