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Finding the Fourth Proportional to 136,181.40, 204,053.40 and 128,308.20

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Solution

The fourth proportional to 136,181.40, 204,053.40 and 128,308.20 is: 192,256.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,181.40 : 204,053.40 = 128,308.20 : x
  2. Step 2: Convert to fraction form
    136,181.40/204,053.40 = 128,308.20/x
  3. Step 3: Cross multiply
    136,181.40x = 204,053.40 × 128,308.20
  4. Step 4: Simplify right side
    136,181.40x = 26,181,724,457.88
  5. Step 5: Solve for x
    x = 26,181,724,457.88/136,181.40
  6. Step 6: Final answer
    x = 192,256.24

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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.