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Finding the Fourth Proportional to 136,484.58, 188,349.47 and 79,157.88

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Solution

The fourth proportional to 136,484.58, 188,349.47 and 79,157.88 is: 109,238.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,484.58 : 188,349.47 = 79,157.88 : x
  2. Step 2: Convert to fraction form
    136,484.58/188,349.47 = 79,157.88/x
  3. Step 3: Cross multiply
    136,484.58x = 188,349.47 × 79,157.88
  4. Step 4: Simplify right side
    136,484.58x = 14,909,344,744.32
  5. Step 5: Solve for x
    x = 14,909,344,744.32/136,484.58
  6. Step 6: Final answer
    x = 109,238.31

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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.