Home / 136,162.43-187,890.98-78,790.31

Finding the Fourth Proportional to 136,162.43, 187,890.98 and 78,790.31

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Solution

The fourth proportional to 136,162.43, 187,890.98 and 78,790.31 is: 108,723.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,162.43 : 187,890.98 = 78,790.31 : x
  2. Step 2: Convert to fraction form
    136,162.43/187,890.98 = 78,790.31/x
  3. Step 3: Cross multiply
    136,162.43x = 187,890.98 × 78,790.31
  4. Step 4: Simplify right side
    136,162.43x = 14,803,987,227.00
  5. Step 5: Solve for x
    x = 14,803,987,227.00/136,162.43
  6. Step 6: Final answer
    x = 108,723.00

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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.