Home / 157,720.37-236,383.67-78,857.15

Finding the Fourth Proportional to 157,720.37, 236,383.67 and 78,857.15

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Solution

The fourth proportional to 157,720.37, 236,383.67 and 78,857.15 is: 118,187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,720.37 : 236,383.67 = 78,857.15 : x
  2. Step 2: Convert to fraction form
    157,720.37/236,383.67 = 78,857.15/x
  3. Step 3: Cross multiply
    157,720.37x = 236,383.67 × 78,857.15
  4. Step 4: Simplify right side
    157,720.37x = 18,640,541,094.39
  5. Step 5: Solve for x
    x = 18,640,541,094.39/157,720.37
  6. Step 6: Final answer
    x = 118,187.28

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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.