Home / 136,945.74-188,966.33-76,508.88

Finding the Fourth Proportional to 136,945.74, 188,966.33 and 76,508.88

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Solution

The fourth proportional to 136,945.74, 188,966.33 and 76,508.88 is: 105,571.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,945.74 : 188,966.33 = 76,508.88 : x
  2. Step 2: Convert to fraction form
    136,945.74/188,966.33 = 76,508.88/x
  3. Step 3: Cross multiply
    136,945.74x = 188,966.33 × 76,508.88
  4. Step 4: Simplify right side
    136,945.74x = 14,457,602,266.01
  5. Step 5: Solve for x
    x = 14,457,602,266.01/136,945.74
  6. Step 6: Final answer
    x = 105,571.76

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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.