Home / 119,319.07-178,589.16-87,720.77

Finding the Fourth Proportional to 119,319.07, 178,589.16 and 87,720.77

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Solution

The fourth proportional to 119,319.07, 178,589.16 and 87,720.77 is: 131,294.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,319.07 : 178,589.16 = 87,720.77 : x
  2. Step 2: Convert to fraction form
    119,319.07/178,589.16 = 87,720.77/x
  3. Step 3: Cross multiply
    119,319.07x = 178,589.16 × 87,720.77
  4. Step 4: Simplify right side
    119,319.07x = 15,665,978,628.85
  5. Step 5: Solve for x
    x = 15,665,978,628.85/119,319.07
  6. Step 6: Final answer
    x = 131,294.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.