Home / 115,899.21-159,922.64-67,509.11

Finding the Fourth Proportional to 115,899.21, 159,922.64 and 67,509.11

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Solution

The fourth proportional to 115,899.21, 159,922.64 and 67,509.11 is: 93,151.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,899.21 : 159,922.64 = 67,509.11 : x
  2. Step 2: Convert to fraction form
    115,899.21/159,922.64 = 67,509.11/x
  3. Step 3: Cross multiply
    115,899.21x = 159,922.64 × 67,509.11
  4. Step 4: Simplify right side
    115,899.21x = 10,796,234,464.41
  5. Step 5: Solve for x
    x = 10,796,234,464.41/115,899.21
  6. Step 6: Final answer
    x = 93,151.92

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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.