Home / 118,587.36-163,699.24-80,399.20

Finding the Fourth Proportional to 118,587.36, 163,699.24 and 80,399.20

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Solution

The fourth proportional to 118,587.36, 163,699.24 and 80,399.20 is: 110,983.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,587.36 : 163,699.24 = 80,399.20 : x
  2. Step 2: Convert to fraction form
    118,587.36/163,699.24 = 80,399.20/x
  3. Step 3: Cross multiply
    118,587.36x = 163,699.24 × 80,399.20
  4. Step 4: Simplify right side
    118,587.36x = 13,161,287,936.61
  5. Step 5: Solve for x
    x = 13,161,287,936.61/118,587.36
  6. Step 6: Final answer
    x = 110,983.90

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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.