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Finding the Fourth Proportional to 86,238.72, 118,748.16 and 73,635.84

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Solution

The fourth proportional to 86,238.72, 118,748.16 and 73,635.84 is: 101,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,238.72 : 118,748.16 = 73,635.84 : x
  2. Step 2: Convert to fraction form
    86,238.72/118,748.16 = 73,635.84/x
  3. Step 3: Cross multiply
    86,238.72x = 118,748.16 × 73,635.84
  4. Step 4: Simplify right side
    86,238.72x = 8,744,120,510.05
  5. Step 5: Solve for x
    x = 8,744,120,510.05/86,238.72
  6. Step 6: Final answer
    x = 101,394.37

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1.5x scale

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.