Home / 153,498.24-229,822.20-78,456.80

Finding the Fourth Proportional to 153,498.24, 229,822.20 and 78,456.80

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Solution

The fourth proportional to 153,498.24, 229,822.20 and 78,456.80 is: 117,467.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,498.24 : 229,822.20 = 78,456.80 : x
  2. Step 2: Convert to fraction form
    153,498.24/229,822.20 = 78,456.80/x
  3. Step 3: Cross multiply
    153,498.24x = 229,822.20 × 78,456.80
  4. Step 4: Simplify right side
    153,498.24x = 18,031,114,380.96
  5. Step 5: Solve for x
    x = 18,031,114,380.96/153,498.24
  6. Step 6: Final answer
    x = 117,467.89

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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.