Home / 137,783.46-190,128.06-77,340.27

Finding the Fourth Proportional to 137,783.46, 190,128.06 and 77,340.27

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Solution

The fourth proportional to 137,783.46, 190,128.06 and 77,340.27 is: 106,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,783.46 : 190,128.06 = 77,340.27 : x
  2. Step 2: Convert to fraction form
    137,783.46/190,128.06 = 77,340.27/x
  3. Step 3: Cross multiply
    137,783.46x = 190,128.06 × 77,340.27
  4. Step 4: Simplify right side
    137,783.46x = 14,704,555,494.98
  5. Step 5: Solve for x
    x = 14,704,555,494.98/137,783.46
  6. Step 6: Final answer
    x = 106,722.21

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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.