Home / 136,707.22-188,690.60-81,575.89

Finding the Fourth Proportional to 136,707.22, 188,690.60 and 81,575.89

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Solution

The fourth proportional to 136,707.22, 188,690.60 and 81,575.89 is: 112,595.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,707.22 : 188,690.60 = 81,575.89 : x
  2. Step 2: Convert to fraction form
    136,707.22/188,690.60 = 81,575.89/x
  3. Step 3: Cross multiply
    136,707.22x = 188,690.60 × 81,575.89
  4. Step 4: Simplify right side
    136,707.22x = 15,392,602,902.98
  5. Step 5: Solve for x
    x = 15,392,602,902.98/136,707.22
  6. Step 6: Final answer
    x = 112,595.39

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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.