Home / 157,821.02-217,791.90-86,201.06

Finding the Fourth Proportional to 157,821.02, 217,791.90 and 86,201.06

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Solution

The fourth proportional to 157,821.02, 217,791.90 and 86,201.06 is: 118,956.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,821.02 : 217,791.90 = 86,201.06 : x
  2. Step 2: Convert to fraction form
    157,821.02/217,791.90 = 86,201.06/x
  3. Step 3: Cross multiply
    157,821.02x = 217,791.90 × 86,201.06
  4. Step 4: Simplify right side
    157,821.02x = 18,773,892,639.41
  5. Step 5: Solve for x
    x = 18,773,892,639.41/157,821.02
  6. Step 6: Final answer
    x = 118,956.86

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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.