Home / 143,477.10-215,215.65-118,107.90

Finding the Fourth Proportional to 143,477.10, 215,215.65 and 118,107.90

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Solution

The fourth proportional to 143,477.10, 215,215.65 and 118,107.90 is: 177,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,477.10 : 215,215.65 = 118,107.90 : x
  2. Step 2: Convert to fraction form
    143,477.10/215,215.65 = 118,107.90/x
  3. Step 3: Cross multiply
    143,477.10x = 215,215.65 × 118,107.90
  4. Step 4: Simplify right side
    143,477.10x = 25,418,668,468.64
  5. Step 5: Solve for x
    x = 25,418,668,468.64/143,477.10
  6. Step 6: Final answer
    x = 177,161.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.