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Finding the Fourth Proportional to 179,122, 247,189.80 and 99,634

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Solution

The fourth proportional to 179,122, 247,189.80 and 99,634 is: 137,495.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,122 : 247,189.80 = 99,634 : x
  2. Step 2: Convert to fraction form
    179,122/247,189.80 = 99,634/x
  3. Step 3: Cross multiply
    179,122x = 247,189.80 × 99,634
  4. Step 4: Simplify right side
    179,122x = 24,628,508,533.20
  5. Step 5: Solve for x
    x = 24,628,508,533.20/179,122
  6. Step 6: Final answer
    x = 137,495.72

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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.