Home / 154,897.40-231,971.85-88,135.28

Finding the Fourth Proportional to 154,897.40, 231,971.85 and 88,135.28

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Solution

The fourth proportional to 154,897.40, 231,971.85 and 88,135.28 is: 131,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,897.40 : 231,971.85 = 88,135.28 : x
  2. Step 2: Convert to fraction form
    154,897.40/231,971.85 = 88,135.28/x
  3. Step 3: Cross multiply
    154,897.40x = 231,971.85 × 88,135.28
  4. Step 4: Simplify right side
    154,897.40x = 20,444,903,951.87
  5. Step 5: Solve for x
    x = 20,444,903,951.87/154,897.40
  6. Step 6: Final answer
    x = 131,989.97

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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.