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Finding the Fourth Proportional to 136,817.40, 205,226.10 and 115,166.10

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Solution

The fourth proportional to 136,817.40, 205,226.10 and 115,166.10 is: 172,749.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,817.40 : 205,226.10 = 115,166.10 : x
  2. Step 2: Convert to fraction form
    136,817.40/205,226.10 = 115,166.10/x
  3. Step 3: Cross multiply
    136,817.40x = 205,226.10 × 115,166.10
  4. Step 4: Simplify right side
    136,817.40x = 23,635,089,555.21
  5. Step 5: Solve for x
    x = 23,635,089,555.21/136,817.40
  6. Step 6: Final answer
    x = 172,749.15

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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.