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Finding the Fourth Proportional to 102,555.89, 153,850.10 and 43,392

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Solution

The fourth proportional to 102,555.89, 153,850.10 and 43,392 is: 65,094.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,555.89 : 153,850.10 = 43,392 : x
  2. Step 2: Convert to fraction form
    102,555.89/153,850.10 = 43,392/x
  3. Step 3: Cross multiply
    102,555.89x = 153,850.10 × 43,392
  4. Step 4: Simplify right side
    102,555.89x = 6,675,863,322.24
  5. Step 5: Solve for x
    x = 6,675,863,322.24/102,555.89
  6. Step 6: Final answer
    x = 65,094.88

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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.