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Finding the Fourth Proportional to 161,708.80, 242,332.80 and 119,257.60

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Solution

The fourth proportional to 161,708.80, 242,332.80 and 119,257.60 is: 178,716.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,708.80 : 242,332.80 = 119,257.60 : x
  2. Step 2: Convert to fraction form
    161,708.80/242,332.80 = 119,257.60/x
  3. Step 3: Cross multiply
    161,708.80x = 242,332.80 × 119,257.60
  4. Step 4: Simplify right side
    161,708.80x = 28,900,028,129.28
  5. Step 5: Solve for x
    x = 28,900,028,129.28/161,708.80
  6. Step 6: Final answer
    x = 178,716.48

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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.