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Finding the Fourth Proportional to 118,770.32, 163,899.10 and 70,998.96

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Solution

The fourth proportional to 118,770.32, 163,899.10 and 70,998.96 is: 97,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,770.32 : 163,899.10 = 70,998.96 : x
  2. Step 2: Convert to fraction form
    118,770.32/163,899.10 = 70,998.96/x
  3. Step 3: Cross multiply
    118,770.32x = 163,899.10 × 70,998.96
  4. Step 4: Simplify right side
    118,770.32x = 11,636,665,644.94
  5. Step 5: Solve for x
    x = 11,636,665,644.94/118,770.32
  6. Step 6: Final answer
    x = 97,976.21

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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.