Home / 136,939.74-188,958.05-76,502.87

Finding the Fourth Proportional to 136,939.74, 188,958.05 and 76,502.87

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Solution

The fourth proportional to 136,939.74, 188,958.05 and 76,502.87 is: 105,563.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,939.74 : 188,958.05 = 76,502.87 : x
  2. Step 2: Convert to fraction form
    136,939.74/188,958.05 = 76,502.87/x
  3. Step 3: Cross multiply
    136,939.74x = 188,958.05 × 76,502.87
  4. Step 4: Simplify right side
    136,939.74x = 14,455,833,134.60
  5. Step 5: Solve for x
    x = 14,455,833,134.60/136,939.74
  6. Step 6: Final answer
    x = 105,563.46

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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.