Home / 158,135.56-218,161.38-103,672.84

Finding the Fourth Proportional to 158,135.56, 218,161.38 and 103,672.84

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Solution

The fourth proportional to 158,135.56, 218,161.38 and 103,672.84 is: 143,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,135.56 : 218,161.38 = 103,672.84 : x
  2. Step 2: Convert to fraction form
    158,135.56/218,161.38 = 103,672.84/x
  3. Step 3: Cross multiply
    158,135.56x = 218,161.38 × 103,672.84
  4. Step 4: Simplify right side
    158,135.56x = 22,617,409,842.92
  5. Step 5: Solve for x
    x = 22,617,409,842.92/158,135.56
  6. Step 6: Final answer
    x = 143,025.45

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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.