Home / 117,243.76-161,852.18-78,548.22

Finding the Fourth Proportional to 117,243.76, 161,852.18 and 78,548.22

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Solution

The fourth proportional to 117,243.76, 161,852.18 and 78,548.22 is: 108,433.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,243.76 : 161,852.18 = 78,548.22 : x
  2. Step 2: Convert to fraction form
    117,243.76/161,852.18 = 78,548.22/x
  3. Step 3: Cross multiply
    117,243.76x = 161,852.18 × 78,548.22
  4. Step 4: Simplify right side
    117,243.76x = 12,713,200,642.12
  5. Step 5: Solve for x
    x = 12,713,200,642.12/117,243.76
  6. Step 6: Final answer
    x = 108,433.92

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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.