Home / 155,435.56-214,485.86-87,451.11

Finding the Fourth Proportional to 155,435.56, 214,485.86 and 87,451.11

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Solution

The fourth proportional to 155,435.56, 214,485.86 and 87,451.11 is: 120,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,435.56 : 214,485.86 = 87,451.11 : x
  2. Step 2: Convert to fraction form
    155,435.56/214,485.86 = 87,451.11/x
  3. Step 3: Cross multiply
    155,435.56x = 214,485.86 × 87,451.11
  4. Step 4: Simplify right side
    155,435.56x = 18,757,026,754.93
  5. Step 5: Solve for x
    x = 18,757,026,754.93/155,435.56
  6. Step 6: Final answer
    x = 120,673.98

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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.