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Finding the Fourth Proportional to 173,447.91, 239,431.89 and 105,486.71

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Solution

The fourth proportional to 173,447.91, 239,431.89 and 105,486.71 is: 145,616.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,447.91 : 239,431.89 = 105,486.71 : x
  2. Step 2: Convert to fraction form
    173,447.91/239,431.89 = 105,486.71/x
  3. Step 3: Cross multiply
    173,447.91x = 239,431.89 × 105,486.71
  4. Step 4: Simplify right side
    173,447.91x = 25,256,882,345.18
  5. Step 5: Solve for x
    x = 25,256,882,345.18/173,447.91
  6. Step 6: Final answer
    x = 145,616.53

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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.