Home / 117,105.95-161,606.25-63,390.80

Finding the Fourth Proportional to 117,105.95, 161,606.25 and 63,390.80

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Solution

The fourth proportional to 117,105.95, 161,606.25 and 63,390.80 is: 87,479.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,105.95 : 161,606.25 = 63,390.80 : x
  2. Step 2: Convert to fraction form
    117,105.95/161,606.25 = 63,390.80/x
  3. Step 3: Cross multiply
    117,105.95x = 161,606.25 × 63,390.80
  4. Step 4: Simplify right side
    117,105.95x = 10,244,349,472.50
  5. Step 5: Solve for x
    x = 10,244,349,472.50/117,105.95
  6. Step 6: Final answer
    x = 87,479.33

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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.