Home / 136,386.48-188,213.28-79,808.64

Finding the Fourth Proportional to 136,386.48, 188,213.28 and 79,808.64

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Solution

The fourth proportional to 136,386.48, 188,213.28 and 79,808.64 is: 110,135.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,386.48 : 188,213.28 = 79,808.64 : x
  2. Step 2: Convert to fraction form
    136,386.48/188,213.28 = 79,808.64/x
  3. Step 3: Cross multiply
    136,386.48x = 188,213.28 × 79,808.64
  4. Step 4: Simplify right side
    136,386.48x = 15,021,045,906.74
  5. Step 5: Solve for x
    x = 15,021,045,906.74/136,386.48
  6. Step 6: Final answer
    x = 110,135.89

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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.