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Finding the Fourth Proportional to 121,284.70, 181,927.05 and 88,236.70

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Solution

The fourth proportional to 121,284.70, 181,927.05 and 88,236.70 is: 132,355.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,284.70 : 181,927.05 = 88,236.70 : x
  2. Step 2: Convert to fraction form
    121,284.70/181,927.05 = 88,236.70/x
  3. Step 3: Cross multiply
    121,284.70x = 181,927.05 × 88,236.70
  4. Step 4: Simplify right side
    121,284.70x = 16,052,642,532.74
  5. Step 5: Solve for x
    x = 16,052,642,532.74/121,284.70
  6. Step 6: Final answer
    x = 132,355.05

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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.