Home / 137,790.22-190,135.77-77,367.50

Finding the Fourth Proportional to 137,790.22, 190,135.77 and 77,367.50

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Solution

The fourth proportional to 137,790.22, 190,135.77 and 77,367.50 is: 106,758.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,790.22 : 190,135.77 = 77,367.50 : x
  2. Step 2: Convert to fraction form
    137,790.22/190,135.77 = 77,367.50/x
  3. Step 3: Cross multiply
    137,790.22x = 190,135.77 × 77,367.50
  4. Step 4: Simplify right side
    137,790.22x = 14,710,329,185.48
  5. Step 5: Solve for x
    x = 14,710,329,185.48/137,790.22
  6. Step 6: Final answer
    x = 106,758.88

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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.