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Finding the Fourth Proportional to 142,644.96, 196,850.04 and 78,982.74

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Solution

The fourth proportional to 142,644.96, 196,850.04 and 78,982.74 is: 108,996.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,644.96 : 196,850.04 = 78,982.74 : x
  2. Step 2: Convert to fraction form
    142,644.96/196,850.04 = 78,982.74/x
  3. Step 3: Cross multiply
    142,644.96x = 196,850.04 × 78,982.74
  4. Step 4: Simplify right side
    142,644.96x = 15,547,755,528.31
  5. Step 5: Solve for x
    x = 15,547,755,528.31/142,644.96
  6. Step 6: Final answer
    x = 108,996.18

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1.5x scale

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.