Home / 155,191.15-214,147.83-87,197.32

Finding the Fourth Proportional to 155,191.15, 214,147.83 and 87,197.32

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Solution

The fourth proportional to 155,191.15, 214,147.83 and 87,197.32 is: 120,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,191.15 : 214,147.83 = 87,197.32 : x
  2. Step 2: Convert to fraction form
    155,191.15/214,147.83 = 87,197.32/x
  3. Step 3: Cross multiply
    155,191.15x = 214,147.83 × 87,197.32
  4. Step 4: Simplify right side
    155,191.15x = 18,673,116,859.82
  5. Step 5: Solve for x
    x = 18,673,116,859.82/155,191.15
  6. Step 6: Final answer
    x = 120,323.34

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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.