Home / 143,581.20-215,417.70-43,760.40

Finding the Fourth Proportional to 143,581.20, 215,417.70 and 43,760.40

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Solution

The fourth proportional to 143,581.20, 215,417.70 and 43,760.40 is: 65,654.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,581.20 : 215,417.70 = 43,760.40 : x
  2. Step 2: Convert to fraction form
    143,581.20/215,417.70 = 43,760.40/x
  3. Step 3: Cross multiply
    143,581.20x = 215,417.70 × 43,760.40
  4. Step 4: Simplify right side
    143,581.20x = 9,426,764,719.08
  5. Step 5: Solve for x
    x = 9,426,764,719.08/143,581.20
  6. Step 6: Final answer
    x = 65,654.59

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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.