Home / 152,490.20-228,517.36-85,791

Finding the Fourth Proportional to 152,490.20, 228,517.36 and 85,791

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Solution

The fourth proportional to 152,490.20, 228,517.36 and 85,791 is: 128,563.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,490.20 : 228,517.36 = 85,791 : x
  2. Step 2: Convert to fraction form
    152,490.20/228,517.36 = 85,791/x
  3. Step 3: Cross multiply
    152,490.20x = 228,517.36 × 85,791
  4. Step 4: Simplify right side
    152,490.20x = 19,604,732,831.76
  5. Step 5: Solve for x
    x = 19,604,732,831.76/152,490.20
  6. Step 6: Final answer
    x = 128,563.89

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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.