Home / 136,890.18-188,906.44-76,461.67

Finding the Fourth Proportional to 136,890.18, 188,906.44 and 76,461.67

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Solution

The fourth proportional to 136,890.18, 188,906.44 and 76,461.67 is: 105,515.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,890.18 : 188,906.44 = 76,461.67 : x
  2. Step 2: Convert to fraction form
    136,890.18/188,906.44 = 76,461.67/x
  3. Step 3: Cross multiply
    136,890.18x = 188,906.44 × 76,461.67
  4. Step 4: Simplify right side
    136,890.18x = 14,444,101,876.15
  5. Step 5: Solve for x
    x = 14,444,101,876.15/136,890.18
  6. Step 6: Final answer
    x = 105,515.98

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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.