Home / 136,678.11-205,031.75-57,800.31

Finding the Fourth Proportional to 136,678.11, 205,031.75 and 57,800.31

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Solution

The fourth proportional to 136,678.11, 205,031.75 and 57,800.31 is: 86,706.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,678.11 : 205,031.75 = 57,800.31 : x
  2. Step 2: Convert to fraction form
    136,678.11/205,031.75 = 57,800.31/x
  3. Step 3: Cross multiply
    136,678.11x = 205,031.75 × 57,800.31
  4. Step 4: Simplify right side
    136,678.11x = 11,850,898,709.84
  5. Step 5: Solve for x
    x = 11,850,898,709.84/136,678.11
  6. Step 6: Final answer
    x = 86,706.63

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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.