Home / 154,420.05-231,630.08-54,579.45

Finding the Fourth Proportional to 154,420.05, 231,630.08 and 54,579.45

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Solution

The fourth proportional to 154,420.05, 231,630.08 and 54,579.45 is: 81,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,420.05 : 231,630.08 = 54,579.45 : x
  2. Step 2: Convert to fraction form
    154,420.05/231,630.08 = 54,579.45/x
  3. Step 3: Cross multiply
    154,420.05x = 231,630.08 × 54,579.45
  4. Step 4: Simplify right side
    154,420.05x = 12,642,242,096.96
  5. Step 5: Solve for x
    x = 12,642,242,096.96/154,420.05
  6. Step 6: Final answer
    x = 81,869.18

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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.