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Finding the Fourth Proportional to 102,577.66, 153,872.97 and 43,405.54

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Solution

The fourth proportional to 102,577.66, 153,872.97 and 43,405.54 is: 65,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,577.66 : 153,872.97 = 43,405.54 : x
  2. Step 2: Convert to fraction form
    102,577.66/153,872.97 = 43,405.54/x
  3. Step 3: Cross multiply
    102,577.66x = 153,872.97 × 43,405.54
  4. Step 4: Simplify right side
    102,577.66x = 6,678,939,354.25
  5. Step 5: Solve for x
    x = 6,678,939,354.25/102,577.66
  6. Step 6: Final answer
    x = 65,111.05

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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.