Home / 123,589.08-185,303.16-81,341.10

Finding the Fourth Proportional to 123,589.08, 185,303.16 and 81,341.10

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Solution

The fourth proportional to 123,589.08, 185,303.16 and 81,341.10 is: 121,958.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,589.08 : 185,303.16 = 81,341.10 : x
  2. Step 2: Convert to fraction form
    123,589.08/185,303.16 = 81,341.10/x
  3. Step 3: Cross multiply
    123,589.08x = 185,303.16 × 81,341.10
  4. Step 4: Simplify right side
    123,589.08x = 15,072,762,867.88
  5. Step 5: Solve for x
    x = 15,072,762,867.88/123,589.08
  6. Step 6: Final answer
    x = 121,958.69

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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.