Home / 113,784.44-157,021.08-65,385.78

Finding the Fourth Proportional to 113,784.44, 157,021.08 and 65,385.78

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Solution

The fourth proportional to 113,784.44, 157,021.08 and 65,385.78 is: 90,231.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,784.44 : 157,021.08 = 65,385.78 : x
  2. Step 2: Convert to fraction form
    113,784.44/157,021.08 = 65,385.78/x
  3. Step 3: Cross multiply
    113,784.44x = 157,021.08 × 65,385.78
  4. Step 4: Simplify right side
    113,784.44x = 10,266,945,792.24
  5. Step 5: Solve for x
    x = 10,266,945,792.24/113,784.44
  6. Step 6: Final answer
    x = 90,231.54

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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.