Home / 155,190.15-214,146.45-87,196.32

Finding the Fourth Proportional to 155,190.15, 214,146.45 and 87,196.32

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Solution

The fourth proportional to 155,190.15, 214,146.45 and 87,196.32 is: 120,321.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,190.15 : 214,146.45 = 87,196.32 : x
  2. Step 2: Convert to fraction form
    155,190.15/214,146.45 = 87,196.32/x
  3. Step 3: Cross multiply
    155,190.15x = 214,146.45 × 87,196.32
  4. Step 4: Simplify right side
    155,190.15x = 18,672,782,381.06
  5. Step 5: Solve for x
    x = 18,672,782,381.06/155,190.15
  6. Step 6: Final answer
    x = 120,321.96

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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.