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Finding the Fourth Proportional to 136,088.82, 187,786.16 and 75,651.72

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Solution

The fourth proportional to 136,088.82, 187,786.16 and 75,651.72 is: 104,390.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,088.82 : 187,786.16 = 75,651.72 : x
  2. Step 2: Convert to fraction form
    136,088.82/187,786.16 = 75,651.72/x
  3. Step 3: Cross multiply
    136,088.82x = 187,786.16 × 75,651.72
  4. Step 4: Simplify right side
    136,088.82x = 14,206,345,617.94
  5. Step 5: Solve for x
    x = 14,206,345,617.94/136,088.82
  6. Step 6: Final answer
    x = 104,390.25

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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.