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Finding the Fourth Proportional to 171,820, 237,215.28 and 112,307.68

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Solution

The fourth proportional to 171,820, 237,215.28 and 112,307.68 is: 155,052.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,820 : 237,215.28 = 112,307.68 : x
  2. Step 2: Convert to fraction form
    171,820/237,215.28 = 112,307.68/x
  3. Step 3: Cross multiply
    171,820x = 237,215.28 × 112,307.68
  4. Step 4: Simplify right side
    171,820x = 26,641,097,757.35
  5. Step 5: Solve for x
    x = 26,641,097,757.35/171,820
  6. Step 6: Final answer
    x = 155,052.37

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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.