Home / 136,889.18-188,905.07-76,460.67

Finding the Fourth Proportional to 136,889.18, 188,905.07 and 76,460.67

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Solution

The fourth proportional to 136,889.18, 188,905.07 and 76,460.67 is: 105,514.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,889.18 : 188,905.07 = 76,460.67 : x
  2. Step 2: Convert to fraction form
    136,889.18/188,905.07 = 76,460.67/x
  3. Step 3: Cross multiply
    136,889.18x = 188,905.07 × 76,460.67
  4. Step 4: Simplify right side
    136,889.18x = 14,443,807,836.29
  5. Step 5: Solve for x
    x = 14,443,807,836.29/136,889.18
  6. Step 6: Final answer
    x = 105,514.61

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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.