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Finding the Fourth Proportional to 105,127.88, 157,606.68 and 71,763.92

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Solution

The fourth proportional to 105,127.88, 157,606.68 and 71,763.92 is: 107,587.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,127.88 : 157,606.68 = 71,763.92 : x
  2. Step 2: Convert to fraction form
    105,127.88/157,606.68 = 71,763.92/x
  3. Step 3: Cross multiply
    105,127.88x = 157,606.68 × 71,763.92
  4. Step 4: Simplify right side
    105,127.88x = 11,310,473,174.99
  5. Step 5: Solve for x
    x = 11,310,473,174.99/105,127.88
  6. Step 6: Final answer
    x = 107,587.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.