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Finding the Fourth Proportional to 121,007.20, 181,165.20 and 117,551.20

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Solution

The fourth proportional to 121,007.20, 181,165.20 and 117,551.20 is: 175,991.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,007.20 : 181,165.20 = 117,551.20 : x
  2. Step 2: Convert to fraction form
    121,007.20/181,165.20 = 117,551.20/x
  3. Step 3: Cross multiply
    121,007.20x = 181,165.20 × 117,551.20
  4. Step 4: Simplify right side
    121,007.20x = 21,296,186,658.24
  5. Step 5: Solve for x
    x = 21,296,186,658.24/121,007.20
  6. Step 6: Final answer
    x = 175,991.07

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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.