Home / 157,770.30-217,723-86,150.40

Finding the Fourth Proportional to 157,770.30, 217,723 and 86,150.40

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Solution

The fourth proportional to 157,770.30, 217,723 and 86,150.40 is: 118,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,770.30 : 217,723 = 86,150.40 : x
  2. Step 2: Convert to fraction form
    157,770.30/217,723 = 86,150.40/x
  3. Step 3: Cross multiply
    157,770.30x = 217,723 × 86,150.40
  4. Step 4: Simplify right side
    157,770.30x = 18,756,923,539.20
  5. Step 5: Solve for x
    x = 18,756,923,539.20/157,770.30
  6. Step 6: Final answer
    x = 118,887.54

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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.