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Finding the Fourth Proportional to 113,342, 156,411.96 and 63,039.92

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Solution

The fourth proportional to 113,342, 156,411.96 and 63,039.92 is: 86,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,342 : 156,411.96 = 63,039.92 : x
  2. Step 2: Convert to fraction form
    113,342/156,411.96 = 63,039.92/x
  3. Step 3: Cross multiply
    113,342x = 156,411.96 × 63,039.92
  4. Step 4: Simplify right side
    113,342x = 9,860,197,445.44
  5. Step 5: Solve for x
    x = 9,860,197,445.44/113,342
  6. Step 6: Final answer
    x = 86,995.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.