Home / 142,538.43-213,856.55-53,817.31

Finding the Fourth Proportional to 142,538.43, 213,856.55 and 53,817.31

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Solution

The fourth proportional to 142,538.43, 213,856.55 and 53,817.31 is: 80,744.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,538.43 : 213,856.55 = 53,817.31 : x
  2. Step 2: Convert to fraction form
    142,538.43/213,856.55 = 53,817.31/x
  3. Step 3: Cross multiply
    142,538.43x = 213,856.55 × 53,817.31
  4. Step 4: Simplify right side
    142,538.43x = 11,509,184,749.65
  5. Step 5: Solve for x
    x = 11,509,184,749.65/142,538.43
  6. Step 6: Final answer
    x = 80,744.43

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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.