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Finding the Fourth Proportional to 180,405.79, 248,953.86 and 99,836.71

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Solution

The fourth proportional to 180,405.79, 248,953.86 and 99,836.71 is: 137,771.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,405.79 : 248,953.86 = 99,836.71 : x
  2. Step 2: Convert to fraction form
    180,405.79/248,953.86 = 99,836.71/x
  3. Step 3: Cross multiply
    180,405.79x = 248,953.86 × 99,836.71
  4. Step 4: Simplify right side
    180,405.79x = 24,854,734,682.79
  5. Step 5: Solve for x
    x = 24,854,734,682.79/180,405.79
  6. Step 6: Final answer
    x = 137,771.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.