Home / 421,511.18-632,108.07-137,127.33

Finding the Fourth Proportional to 421,511.18, 632,108.07 and 137,127.33

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Solution

The fourth proportional to 421,511.18, 632,108.07 and 137,127.33 is: 205,639.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,511.18 : 632,108.07 = 137,127.33 : x
  2. Step 2: Convert to fraction form
    421,511.18/632,108.07 = 137,127.33/x
  3. Step 3: Cross multiply
    421,511.18x = 632,108.07 × 137,127.33
  4. Step 4: Simplify right side
    421,511.18x = 86,679,291,910.55
  5. Step 5: Solve for x
    x = 86,679,291,910.55/421,511.18
  6. Step 6: Final answer
    x = 205,639.37

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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.