Home / 276,713.28-415,124.16-99,172.80

Finding the Fourth Proportional to 276,713.28, 415,124.16 and 99,172.80

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Solution

The fourth proportional to 276,713.28, 415,124.16 and 99,172.80 is: 148,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,713.28 : 415,124.16 = 99,172.80 : x
  2. Step 2: Convert to fraction form
    276,713.28/415,124.16 = 99,172.80/x
  3. Step 3: Cross multiply
    276,713.28x = 415,124.16 × 99,172.80
  4. Step 4: Simplify right side
    276,713.28x = 41,169,025,294.85
  5. Step 5: Solve for x
    x = 41,169,025,294.85/276,713.28
  6. Step 6: Final answer
    x = 148,778.64

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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.