Home / 138,804.46-191,550.21-75,142.25

Finding the Fourth Proportional to 138,804.46, 191,550.21 and 75,142.25

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Solution

The fourth proportional to 138,804.46, 191,550.21 and 75,142.25 is: 103,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,804.46 : 191,550.21 = 75,142.25 : x
  2. Step 2: Convert to fraction form
    138,804.46/191,550.21 = 75,142.25/x
  3. Step 3: Cross multiply
    138,804.46x = 191,550.21 × 75,142.25
  4. Step 4: Simplify right side
    138,804.46x = 14,393,513,767.37
  5. Step 5: Solve for x
    x = 14,393,513,767.37/138,804.46
  6. Step 6: Final answer
    x = 103,696.33

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1.5x scale

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.