Home / 158,284.83-218,431.58-85,685.87

Finding the Fourth Proportional to 158,284.83, 218,431.58 and 85,685.87

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Solution

The fourth proportional to 158,284.83, 218,431.58 and 85,685.87 is: 118,245.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,284.83 : 218,431.58 = 85,685.87 : x
  2. Step 2: Convert to fraction form
    158,284.83/218,431.58 = 85,685.87/x
  3. Step 3: Cross multiply
    158,284.83x = 218,431.58 × 85,685.87
  4. Step 4: Simplify right side
    158,284.83x = 18,716,498,447.19
  5. Step 5: Solve for x
    x = 18,716,498,447.19/158,284.83
  6. Step 6: Final answer
    x = 118,245.69

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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.