Home / 78,181.72-107,901.66-58,100.20

Finding the Fourth Proportional to 78,181.72, 107,901.66 and 58,100.20

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Solution

The fourth proportional to 78,181.72, 107,901.66 and 58,100.20 is: 80,186.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,181.72 : 107,901.66 = 58,100.20 : x
  2. Step 2: Convert to fraction form
    78,181.72/107,901.66 = 58,100.20/x
  3. Step 3: Cross multiply
    78,181.72x = 107,901.66 × 58,100.20
  4. Step 4: Simplify right side
    78,181.72x = 6,269,108,026.33
  5. Step 5: Solve for x
    x = 6,269,108,026.33/78,181.72
  6. Step 6: Final answer
    x = 80,186.37

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1.5x scale

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.