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Finding the Fourth Proportional to 108,676, 149,973.29 and 63,385.26

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Solution

The fourth proportional to 108,676, 149,973.29 and 63,385.26 is: 87,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,676 : 149,973.29 = 63,385.26 : x
  2. Step 2: Convert to fraction form
    108,676/149,973.29 = 63,385.26/x
  3. Step 3: Cross multiply
    108,676x = 149,973.29 × 63,385.26
  4. Step 4: Simplify right side
    108,676x = 9,506,095,979.71
  5. Step 5: Solve for x
    x = 9,506,095,979.71/108,676
  6. Step 6: Final answer
    x = 87,471.90

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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.