Home / 129,020.18-193,530.06-84,636.36

Finding the Fourth Proportional to 129,020.18, 193,530.06 and 84,636.36

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Solution

The fourth proportional to 129,020.18, 193,530.06 and 84,636.36 is: 126,954.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,020.18 : 193,530.06 = 84,636.36 : x
  2. Step 2: Convert to fraction form
    129,020.18/193,530.06 = 84,636.36/x
  3. Step 3: Cross multiply
    129,020.18x = 193,530.06 × 84,636.36
  4. Step 4: Simplify right side
    129,020.18x = 16,379,679,828.98
  5. Step 5: Solve for x
    x = 16,379,679,828.98/129,020.18
  6. Step 6: Final answer
    x = 126,954.41

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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.