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Finding the Fourth Proportional to 108,374.69, 149,597.19 and 81,594.87

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Solution

The fourth proportional to 108,374.69, 149,597.19 and 81,594.87 is: 112,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,374.69 : 149,597.19 = 81,594.87 : x
  2. Step 2: Convert to fraction form
    108,374.69/149,597.19 = 81,594.87/x
  3. Step 3: Cross multiply
    108,374.69x = 149,597.19 × 81,594.87
  4. Step 4: Simplify right side
    108,374.69x = 12,206,363,270.42
  5. Step 5: Solve for x
    x = 12,206,363,270.42/108,374.69
  6. Step 6: Final answer
    x = 112,631.13

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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.