Home / 117,669.12-162,340.44-77,404.56

Finding the Fourth Proportional to 117,669.12, 162,340.44 and 77,404.56

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Solution

The fourth proportional to 117,669.12, 162,340.44 and 77,404.56 is: 106,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,669.12 : 162,340.44 = 77,404.56 : x
  2. Step 2: Convert to fraction form
    117,669.12/162,340.44 = 77,404.56/x
  3. Step 3: Cross multiply
    117,669.12x = 162,340.44 × 77,404.56
  4. Step 4: Simplify right side
    117,669.12x = 12,565,890,328.41
  5. Step 5: Solve for x
    x = 12,565,890,328.41/117,669.12
  6. Step 6: Final answer
    x = 106,790.04

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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.