Home / 140,778.09-211,236.53-65,903.31

Finding the Fourth Proportional to 140,778.09, 211,236.53 and 65,903.31

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Solution

The fourth proportional to 140,778.09, 211,236.53 and 65,903.31 is: 98,887.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,778.09 : 211,236.53 = 65,903.31 : x
  2. Step 2: Convert to fraction form
    140,778.09/211,236.53 = 65,903.31/x
  3. Step 3: Cross multiply
    140,778.09x = 211,236.53 × 65,903.31
  4. Step 4: Simplify right side
    140,778.09x = 13,921,186,190.40
  5. Step 5: Solve for x
    x = 13,921,186,190.40/140,778.09
  6. Step 6: Final answer
    x = 98,887.45

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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.