Home / 104,145.97-143,721.15-56,399.30

Finding the Fourth Proportional to 104,145.97, 143,721.15 and 56,399.30

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Solution

The fourth proportional to 104,145.97, 143,721.15 and 56,399.30 is: 77,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,145.97 : 143,721.15 = 56,399.30 : x
  2. Step 2: Convert to fraction form
    104,145.97/143,721.15 = 56,399.30/x
  3. Step 3: Cross multiply
    104,145.97x = 143,721.15 × 56,399.30
  4. Step 4: Simplify right side
    104,145.97x = 8,105,771,973.20
  5. Step 5: Solve for x
    x = 8,105,771,973.20/104,145.97
  6. Step 6: Final answer
    x = 77,830.88

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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.