Home / 136,665.86-188,580.02-76,229.42

Finding the Fourth Proportional to 136,665.86, 188,580.02 and 76,229.42

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Solution

The fourth proportional to 136,665.86, 188,580.02 and 76,229.42 is: 105,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,665.86 : 188,580.02 = 76,229.42 : x
  2. Step 2: Convert to fraction form
    136,665.86/188,580.02 = 76,229.42/x
  3. Step 3: Cross multiply
    136,665.86x = 188,580.02 × 76,229.42
  4. Step 4: Simplify right side
    136,665.86x = 14,375,345,548.19
  5. Step 5: Solve for x
    x = 14,375,345,548.19/136,665.86
  6. Step 6: Final answer
    x = 105,186.08

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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.