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Finding the Fourth Proportional to 113,618, 156,796.08 and 63,320.24

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Solution

The fourth proportional to 113,618, 156,796.08 and 63,320.24 is: 87,383.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,618 : 156,796.08 = 63,320.24 : x
  2. Step 2: Convert to fraction form
    113,618/156,796.08 = 63,320.24/x
  3. Step 3: Cross multiply
    113,618x = 156,796.08 × 63,320.24
  4. Step 4: Simplify right side
    113,618x = 9,928,365,416.66
  5. Step 5: Solve for x
    x = 9,928,365,416.66/113,618
  6. Step 6: Final answer
    x = 87,383.74

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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.