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Finding the Fourth Proportional to 136,488.60, 204,732.90 and 125,429.40

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Solution

The fourth proportional to 136,488.60, 204,732.90 and 125,429.40 is: 188,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,488.60 : 204,732.90 = 125,429.40 : x
  2. Step 2: Convert to fraction form
    136,488.60/204,732.90 = 125,429.40/x
  3. Step 3: Cross multiply
    136,488.60x = 204,732.90 × 125,429.40
  4. Step 4: Simplify right side
    136,488.60x = 25,679,524,807.26
  5. Step 5: Solve for x
    x = 25,679,524,807.26/136,488.60
  6. Step 6: Final answer
    x = 188,144.10

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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.