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Finding the Fourth Proportional to 111,518.82, 153,891.99 and 63,119.71

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Solution

The fourth proportional to 111,518.82, 153,891.99 and 63,119.71 is: 87,102.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,518.82 : 153,891.99 = 63,119.71 : x
  2. Step 2: Convert to fraction form
    111,518.82/153,891.99 = 63,119.71/x
  3. Step 3: Cross multiply
    111,518.82x = 153,891.99 × 63,119.71
  4. Step 4: Simplify right side
    111,518.82x = 9,713,617,756.08
  5. Step 5: Solve for x
    x = 9,713,617,756.08/111,518.82
  6. Step 6: Final answer
    x = 87,102.94

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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.