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Finding the Fourth Proportional to 118,248.39, 163,126.40 and 80,021.34

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Solution

The fourth proportional to 118,248.39, 163,126.40 and 80,021.34 is: 110,391.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,248.39 : 163,126.40 = 80,021.34 : x
  2. Step 2: Convert to fraction form
    118,248.39/163,126.40 = 80,021.34/x
  3. Step 3: Cross multiply
    118,248.39x = 163,126.40 × 80,021.34
  4. Step 4: Simplify right side
    118,248.39x = 13,053,592,717.27
  5. Step 5: Solve for x
    x = 13,053,592,717.27/118,248.39
  6. Step 6: Final answer
    x = 110,391.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.