Home / 153,890.50-211,898.77-139,456.43

Finding the Fourth Proportional to 153,890.50, 211,898.77 and 139,456.43

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Solution

The fourth proportional to 153,890.50, 211,898.77 and 139,456.43 is: 192,023.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,890.50 : 211,898.77 = 139,456.43 : x
  2. Step 2: Convert to fraction form
    153,890.50/211,898.77 = 139,456.43/x
  3. Step 3: Cross multiply
    153,890.50x = 211,898.77 × 139,456.43
  4. Step 4: Simplify right side
    153,890.50x = 29,550,646,431.57
  5. Step 5: Solve for x
    x = 29,550,646,431.57/153,890.50
  6. Step 6: Final answer
    x = 192,023.86

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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.