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Finding the Fourth Proportional to 108,563.36, 149,818.96 and 70,815.92

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Solution

The fourth proportional to 108,563.36, 149,818.96 and 70,815.92 is: 97,726.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,563.36 : 149,818.96 = 70,815.92 : x
  2. Step 2: Convert to fraction form
    108,563.36/149,818.96 = 70,815.92/x
  3. Step 3: Cross multiply
    108,563.36x = 149,818.96 × 70,815.92
  4. Step 4: Simplify right side
    108,563.36x = 10,609,567,485.84
  5. Step 5: Solve for x
    x = 10,609,567,485.84/108,563.36
  6. Step 6: Final answer
    x = 97,726.96

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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.