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Finding the Fourth Proportional to 113,675.28, 156,822.12 and 108,404.88

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Solution

The fourth proportional to 113,675.28, 156,822.12 and 108,404.88 is: 149,551.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,675.28 : 156,822.12 = 108,404.88 : x
  2. Step 2: Convert to fraction form
    113,675.28/156,822.12 = 108,404.88/x
  3. Step 3: Cross multiply
    113,675.28x = 156,822.12 × 108,404.88
  4. Step 4: Simplify right side
    113,675.28x = 17,000,283,099.95
  5. Step 5: Solve for x
    x = 17,000,283,099.95/113,675.28
  6. Step 6: Final answer
    x = 149,551.28

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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.