Home / 126,140.11-174,072.40-68,780.41

Finding the Fourth Proportional to 126,140.11, 174,072.40 and 68,780.41

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Solution

The fourth proportional to 126,140.11, 174,072.40 and 68,780.41 is: 94,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,140.11 : 174,072.40 = 68,780.41 : x
  2. Step 2: Convert to fraction form
    126,140.11/174,072.40 = 68,780.41/x
  3. Step 3: Cross multiply
    126,140.11x = 174,072.40 × 68,780.41
  4. Step 4: Simplify right side
    126,140.11x = 11,972,771,041.68
  5. Step 5: Solve for x
    x = 11,972,771,041.68/126,140.11
  6. Step 6: Final answer
    x = 94,916.45

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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.