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Finding the Fourth Proportional to 102,486.59, 153,663.64 and 40,163.39

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Solution

The fourth proportional to 102,486.59, 153,663.64 and 40,163.39 is: 60,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,486.59 : 153,663.64 = 40,163.39 : x
  2. Step 2: Convert to fraction form
    102,486.59/153,663.64 = 40,163.39/x
  3. Step 3: Cross multiply
    102,486.59x = 153,663.64 × 40,163.39
  4. Step 4: Simplify right side
    102,486.59x = 6,171,652,702.14
  5. Step 5: Solve for x
    x = 6,171,652,702.14/102,486.59
  6. Step 6: Final answer
    x = 60,219.12

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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.