Home / 117,864.90-162,242.78-102,731.27

Finding the Fourth Proportional to 117,864.90, 162,242.78 and 102,731.27

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Solution

The fourth proportional to 117,864.90, 162,242.78 and 102,731.27 is: 141,411.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,864.90 : 162,242.78 = 102,731.27 : x
  2. Step 2: Convert to fraction form
    117,864.90/162,242.78 = 102,731.27/x
  3. Step 3: Cross multiply
    117,864.90x = 162,242.78 × 102,731.27
  4. Step 4: Simplify right side
    117,864.90x = 16,667,405,512.86
  5. Step 5: Solve for x
    x = 16,667,405,512.86/117,864.90
  6. Step 6: Final answer
    x = 141,411.10

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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.