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Finding the Fourth Proportional to 113,441, 156,548.58 and 63,138.92

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Solution

The fourth proportional to 113,441, 156,548.58 and 63,138.92 is: 87,131.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,441 : 156,548.58 = 63,138.92 : x
  2. Step 2: Convert to fraction form
    113,441/156,548.58 = 63,138.92/x
  3. Step 3: Cross multiply
    113,441x = 156,548.58 × 63,138.92
  4. Step 4: Simplify right side
    113,441x = 9,884,308,268.73
  5. Step 5: Solve for x
    x = 9,884,308,268.73/113,441
  6. Step 6: Final answer
    x = 87,131.71

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1.5x scale

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.