Home / 117,257.40-161,815.86-63,542.46

Finding the Fourth Proportional to 117,257.40, 161,815.86 and 63,542.46

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Solution

The fourth proportional to 117,257.40, 161,815.86 and 63,542.46 is: 87,688.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,257.40 : 161,815.86 = 63,542.46 : x
  2. Step 2: Convert to fraction form
    117,257.40/161,815.86 = 63,542.46/x
  3. Step 3: Cross multiply
    117,257.40x = 161,815.86 × 63,542.46
  4. Step 4: Simplify right side
    117,257.40x = 10,282,177,811.42
  5. Step 5: Solve for x
    x = 10,282,177,811.42/117,257.40
  6. Step 6: Final answer
    x = 87,688.95

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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.