Home / 127,781.40-191,709.10-52,887.72

Finding the Fourth Proportional to 127,781.40, 191,709.10 and 52,887.72

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Solution

The fourth proportional to 127,781.40, 191,709.10 and 52,887.72 is: 79,346.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,781.40 : 191,709.10 = 52,887.72 : x
  2. Step 2: Convert to fraction form
    127,781.40/191,709.10 = 52,887.72/x
  3. Step 3: Cross multiply
    127,781.40x = 191,709.10 × 52,887.72
  4. Step 4: Simplify right side
    127,781.40x = 10,139,057,202.25
  5. Step 5: Solve for x
    x = 10,139,057,202.25/127,781.40
  6. Step 6: Final answer
    x = 79,346.89

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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.