Home / 126,636.50-190,020.36-64,307

Finding the Fourth Proportional to 126,636.50, 190,020.36 and 64,307

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Solution

The fourth proportional to 126,636.50, 190,020.36 and 64,307 is: 96,493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,636.50 : 190,020.36 = 64,307 : x
  2. Step 2: Convert to fraction form
    126,636.50/190,020.36 = 64,307/x
  3. Step 3: Cross multiply
    126,636.50x = 190,020.36 × 64,307
  4. Step 4: Simplify right side
    126,636.50x = 12,219,639,290.52
  5. Step 5: Solve for x
    x = 12,219,639,290.52/126,636.50
  6. Step 6: Final answer
    x = 96,493.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.