Home / 102,981.83-154,286.24-86,448.11

Finding the Fourth Proportional to 102,981.83, 154,286.24 and 86,448.11

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Solution

The fourth proportional to 102,981.83, 154,286.24 and 86,448.11 is: 129,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,981.83 : 154,286.24 = 86,448.11 : x
  2. Step 2: Convert to fraction form
    102,981.83/154,286.24 = 86,448.11/x
  3. Step 3: Cross multiply
    102,981.83x = 154,286.24 × 86,448.11
  4. Step 4: Simplify right side
    102,981.83x = 13,337,752,643.33
  5. Step 5: Solve for x
    x = 13,337,752,643.33/102,981.83
  6. Step 6: Final answer
    x = 129,515.60

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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.