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Finding the Fourth Proportional to 136,651.51, 188,579.44 and 76,226.08

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Solution

The fourth proportional to 136,651.51, 188,579.44 and 76,226.08 is: 105,192.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,651.51 : 188,579.44 = 76,226.08 : x
  2. Step 2: Convert to fraction form
    136,651.51/188,579.44 = 76,226.08/x
  3. Step 3: Cross multiply
    136,651.51x = 188,579.44 × 76,226.08
  4. Step 4: Simplify right side
    136,651.51x = 14,374,671,479.80
  5. Step 5: Solve for x
    x = 14,374,671,479.80/136,651.51
  6. Step 6: Final answer
    x = 105,192.19

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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.