Home / 117,220.18-161,763.66-63,506.56

Finding the Fourth Proportional to 117,220.18, 161,763.66 and 63,506.56

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Solution

The fourth proportional to 117,220.18, 161,763.66 and 63,506.56 is: 87,638.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,220.18 : 161,763.66 = 63,506.56 : x
  2. Step 2: Convert to fraction form
    117,220.18/161,763.66 = 63,506.56/x
  3. Step 3: Cross multiply
    117,220.18x = 161,763.66 × 63,506.56
  4. Step 4: Simplify right side
    117,220.18x = 10,273,053,579.61
  5. Step 5: Solve for x
    x = 10,273,053,579.61/117,220.18
  6. Step 6: Final answer
    x = 87,638.95

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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.