Home / 276,936.02-415,478.42-87,403.72

Finding the Fourth Proportional to 276,936.02, 415,478.42 and 87,403.72

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Solution

The fourth proportional to 276,936.02, 415,478.42 and 87,403.72 is: 131,129.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,936.02 : 415,478.42 = 87,403.72 : x
  2. Step 2: Convert to fraction form
    276,936.02/415,478.42 = 87,403.72/x
  3. Step 3: Cross multiply
    276,936.02x = 415,478.42 × 87,403.72
  4. Step 4: Simplify right side
    276,936.02x = 36,314,359,487.72
  5. Step 5: Solve for x
    x = 36,314,359,487.72/276,936.02
  6. Step 6: Final answer
    x = 131,129.06

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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.