Home / 156,781.03-216,274.89-99,318.97

Finding the Fourth Proportional to 156,781.03, 216,274.89 and 99,318.97

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Solution

The fourth proportional to 156,781.03, 216,274.89 and 99,318.97 is: 137,007.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.03 : 216,274.89 = 99,318.97 : x
  2. Step 2: Convert to fraction form
    156,781.03/216,274.89 = 99,318.97/x
  3. Step 3: Cross multiply
    156,781.03x = 216,274.89 × 99,318.97
  4. Step 4: Simplify right side
    156,781.03x = 21,480,198,815.07
  5. Step 5: Solve for x
    x = 21,480,198,815.07/156,781.03
  6. Step 6: Final answer
    x = 137,007.64

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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.