Home / 140,564.35-193,980.99-76,903.21

Finding the Fourth Proportional to 140,564.35, 193,980.99 and 76,903.21

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Solution

The fourth proportional to 140,564.35, 193,980.99 and 76,903.21 is: 106,127.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,564.35 : 193,980.99 = 76,903.21 : x
  2. Step 2: Convert to fraction form
    140,564.35/193,980.99 = 76,903.21/x
  3. Step 3: Cross multiply
    140,564.35x = 193,980.99 × 76,903.21
  4. Step 4: Simplify right side
    140,564.35x = 14,917,760,809.98
  5. Step 5: Solve for x
    x = 14,917,760,809.98/140,564.35
  6. Step 6: Final answer
    x = 106,127.63

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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.