Home / 153,238.10-211,348.76-99,540.42

Finding the Fourth Proportional to 153,238.10, 211,348.76 and 99,540.42

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Solution

The fourth proportional to 153,238.10, 211,348.76 and 99,540.42 is: 137,287.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,238.10 : 211,348.76 = 99,540.42 : x
  2. Step 2: Convert to fraction form
    153,238.10/211,348.76 = 99,540.42/x
  3. Step 3: Cross multiply
    153,238.10x = 211,348.76 × 99,540.42
  4. Step 4: Simplify right side
    153,238.10x = 21,037,744,336.88
  5. Step 5: Solve for x
    x = 21,037,744,336.88/153,238.10
  6. Step 6: Final answer
    x = 137,287.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.