Home / 136,736.71-188,695.57-79,381.35

Finding the Fourth Proportional to 136,736.71, 188,695.57 and 79,381.35

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Solution

The fourth proportional to 136,736.71, 188,695.57 and 79,381.35 is: 109,545.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,736.71 : 188,695.57 = 79,381.35 : x
  2. Step 2: Convert to fraction form
    136,736.71/188,695.57 = 79,381.35/x
  3. Step 3: Cross multiply
    136,736.71x = 188,695.57 × 79,381.35
  4. Step 4: Simplify right side
    136,736.71x = 14,978,909,231.82
  5. Step 5: Solve for x
    x = 14,978,909,231.82/136,736.71
  6. Step 6: Final answer
    x = 109,545.63

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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.