Home / 155,367.81-214,407.27-87,383.70

Finding the Fourth Proportional to 155,367.81, 214,407.27 and 87,383.70

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Solution

The fourth proportional to 155,367.81, 214,407.27 and 87,383.70 is: 120,589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,367.81 : 214,407.27 = 87,383.70 : x
  2. Step 2: Convert to fraction form
    155,367.81/214,407.27 = 87,383.70/x
  3. Step 3: Cross multiply
    155,367.81x = 214,407.27 × 87,383.70
  4. Step 4: Simplify right side
    155,367.81x = 18,735,700,559.50
  5. Step 5: Solve for x
    x = 18,735,700,559.50/155,367.81
  6. Step 6: Final answer
    x = 120,589.33

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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.