Home / 165,114.15-247,507.20-80,805.30

Finding the Fourth Proportional to 165,114.15, 247,507.20 and 80,805.30

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Solution

The fourth proportional to 165,114.15, 247,507.20 and 80,805.30 is: 121,127.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,114.15 : 247,507.20 = 80,805.30 : x
  2. Step 2: Convert to fraction form
    165,114.15/247,507.20 = 80,805.30/x
  3. Step 3: Cross multiply
    165,114.15x = 247,507.20 × 80,805.30
  4. Step 4: Simplify right side
    165,114.15x = 19,999,893,548.16
  5. Step 5: Solve for x
    x = 19,999,893,548.16/165,114.15
  6. Step 6: Final answer
    x = 121,127.68

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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.