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Finding the Fourth Proportional to 108,657.50, 149,947.90 and 63,366.90

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Solution

The fourth proportional to 108,657.50, 149,947.90 and 63,366.90 is: 87,446.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,657.50 : 149,947.90 = 63,366.90 : x
  2. Step 2: Convert to fraction form
    108,657.50/149,947.90 = 63,366.90/x
  3. Step 3: Cross multiply
    108,657.50x = 149,947.90 × 63,366.90
  4. Step 4: Simplify right side
    108,657.50x = 9,501,733,584.51
  5. Step 5: Solve for x
    x = 9,501,733,584.51/108,657.50
  6. Step 6: Final answer
    x = 87,446.64

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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.