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Finding the Fourth Proportional to 117,619.80, 176,235.30 and 100,901.40

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Solution

The fourth proportional to 117,619.80, 176,235.30 and 100,901.40 is: 151,185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,619.80 : 176,235.30 = 100,901.40 : x
  2. Step 2: Convert to fraction form
    117,619.80/176,235.30 = 100,901.40/x
  3. Step 3: Cross multiply
    117,619.80x = 176,235.30 × 100,901.40
  4. Step 4: Simplify right side
    117,619.80x = 17,782,388,499.42
  5. Step 5: Solve for x
    x = 17,782,388,499.42/117,619.80
  6. Step 6: Final answer
    x = 151,185.33

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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.