Home / 138,150.66-190,636.98-77,709.27

Finding the Fourth Proportional to 138,150.66, 190,636.98 and 77,709.27

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Solution

The fourth proportional to 138,150.66, 190,636.98 and 77,709.27 is: 107,232.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,150.66 : 190,636.98 = 77,709.27 : x
  2. Step 2: Convert to fraction form
    138,150.66/190,636.98 = 77,709.27/x
  3. Step 3: Cross multiply
    138,150.66x = 190,636.98 × 77,709.27
  4. Step 4: Simplify right side
    138,150.66x = 14,814,260,550.80
  5. Step 5: Solve for x
    x = 14,814,260,550.80/138,150.66
  6. Step 6: Final answer
    x = 107,232.64

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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.