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Finding the Fourth Proportional to 136,717.48, 188,674.62 and 79,352.48

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Solution

The fourth proportional to 136,717.48, 188,674.62 and 79,352.48 is: 109,509.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,717.48 : 188,674.62 = 79,352.48 : x
  2. Step 2: Convert to fraction form
    136,717.48/188,674.62 = 79,352.48/x
  3. Step 3: Cross multiply
    136,717.48x = 188,674.62 × 79,352.48
  4. Step 4: Simplify right side
    136,717.48x = 14,971,799,010.06
  5. Step 5: Solve for x
    x = 14,971,799,010.06/136,717.48
  6. Step 6: Final answer
    x = 109,509.03

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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.