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Finding the Fourth Proportional to 173,309.55, 239,126.18 and 100,669.28

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Solution

The fourth proportional to 173,309.55, 239,126.18 and 100,669.28 is: 138,899.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,309.55 : 239,126.18 = 100,669.28 : x
  2. Step 2: Convert to fraction form
    173,309.55/239,126.18 = 100,669.28/x
  3. Step 3: Cross multiply
    173,309.55x = 239,126.18 × 100,669.28
  4. Step 4: Simplify right side
    173,309.55x = 24,072,660,464.22
  5. Step 5: Solve for x
    x = 24,072,660,464.22/173,309.55
  6. Step 6: Final answer
    x = 138,899.79

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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.