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Finding the Fourth Proportional to 172,506.60, 258,516.90 and 137,028.60

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Solution

The fourth proportional to 172,506.60, 258,516.90 and 137,028.60 is: 205,349.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,506.60 : 258,516.90 = 137,028.60 : x
  2. Step 2: Convert to fraction form
    172,506.60/258,516.90 = 137,028.60/x
  3. Step 3: Cross multiply
    172,506.60x = 258,516.90 × 137,028.60
  4. Step 4: Simplify right side
    172,506.60x = 35,424,208,883.34
  5. Step 5: Solve for x
    x = 35,424,208,883.34/172,506.60
  6. Step 6: Final answer
    x = 205,349.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.