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Finding the Fourth Proportional to 173,035.72, 238,772.70 and 105,089.88

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Solution

The fourth proportional to 173,035.72, 238,772.70 and 105,089.88 is: 145,013.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,035.72 : 238,772.70 = 105,089.88 : x
  2. Step 2: Convert to fraction form
    173,035.72/238,772.70 = 105,089.88/x
  3. Step 3: Cross multiply
    173,035.72x = 238,772.70 × 105,089.88
  4. Step 4: Simplify right side
    173,035.72x = 25,092,594,390.28
  5. Step 5: Solve for x
    x = 25,092,594,390.28/173,035.72
  6. Step 6: Final answer
    x = 145,013.96

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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.