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Finding the Fourth Proportional to 113,649, 156,835.62 and 63,348

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Solution

The fourth proportional to 113,649, 156,835.62 and 63,348 is: 87,420.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,649 : 156,835.62 = 63,348 : x
  2. Step 2: Convert to fraction form
    113,649/156,835.62 = 63,348/x
  3. Step 3: Cross multiply
    113,649x = 156,835.62 × 63,348
  4. Step 4: Simplify right side
    113,649x = 9,935,222,855.76
  5. Step 5: Solve for x
    x = 9,935,222,855.76/113,649
  6. Step 6: Final answer
    x = 87,420.24

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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.