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Finding the Fourth Proportional to 173,429.43, 239,371.23 and 105,432

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Solution

The fourth proportional to 173,429.43, 239,371.23 and 105,432 is: 145,519.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,429.43 : 239,371.23 = 105,432 : x
  2. Step 2: Convert to fraction form
    173,429.43/239,371.23 = 105,432/x
  3. Step 3: Cross multiply
    173,429.43x = 239,371.23 × 105,432
  4. Step 4: Simplify right side
    173,429.43x = 25,237,387,521.36
  5. Step 5: Solve for x
    x = 25,237,387,521.36/173,429.43
  6. Step 6: Final answer
    x = 145,519.64

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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.