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Finding the Fourth Proportional to 136,667.70, 205,001.55 and 57,755.70

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Solution

The fourth proportional to 136,667.70, 205,001.55 and 57,755.70 is: 86,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,667.70 : 205,001.55 = 57,755.70 : x
  2. Step 2: Convert to fraction form
    136,667.70/205,001.55 = 57,755.70/x
  3. Step 3: Cross multiply
    136,667.70x = 205,001.55 × 57,755.70
  4. Step 4: Simplify right side
    136,667.70x = 11,840,008,021.34
  5. Step 5: Solve for x
    x = 11,840,008,021.34/136,667.70
  6. Step 6: Final answer
    x = 86,633.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.