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Finding the Fourth Proportional to 154,991.66, 232,511.78 and 66,245.63

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Solution

The fourth proportional to 154,991.66, 232,511.78 and 66,245.63 is: 99,378.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,991.66 : 232,511.78 = 66,245.63 : x
  2. Step 2: Convert to fraction form
    154,991.66/232,511.78 = 66,245.63/x
  3. Step 3: Cross multiply
    154,991.66x = 232,511.78 × 66,245.63
  4. Step 4: Simplify right side
    154,991.66x = 15,402,888,351.58
  5. Step 5: Solve for x
    x = 15,402,888,351.58/154,991.66
  6. Step 6: Final answer
    x = 99,378.82

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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.