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Finding the Fourth Proportional to 121,172.55, 181,765.61 and 36,935.46

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Solution

The fourth proportional to 121,172.55, 181,765.61 and 36,935.46 is: 55,405.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,172.55 : 181,765.61 = 36,935.46 : x
  2. Step 2: Convert to fraction form
    121,172.55/181,765.61 = 36,935.46/x
  3. Step 3: Cross multiply
    121,172.55x = 181,765.61 × 36,935.46
  4. Step 4: Simplify right side
    121,172.55x = 6,713,596,371.36
  5. Step 5: Solve for x
    x = 6,713,596,371.36/121,172.55
  6. Step 6: Final answer
    x = 55,405.26

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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.