Home / 145,819.20-218,145.60-126,314.40

Finding the Fourth Proportional to 145,819.20, 218,145.60 and 126,314.40

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Solution

The fourth proportional to 145,819.20, 218,145.60 and 126,314.40 is: 188,966.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,819.20 : 218,145.60 = 126,314.40 : x
  2. Step 2: Convert to fraction form
    145,819.20/218,145.60 = 126,314.40/x
  3. Step 3: Cross multiply
    145,819.20x = 218,145.60 × 126,314.40
  4. Step 4: Simplify right side
    145,819.20x = 27,554,930,576.64
  5. Step 5: Solve for x
    x = 27,554,930,576.64/145,819.20
  6. Step 6: Final answer
    x = 188,966.41

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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.