Home / 123,978.58-186,047.07-45,085.30

Finding the Fourth Proportional to 123,978.58, 186,047.07 and 45,085.30

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Solution

The fourth proportional to 123,978.58, 186,047.07 and 45,085.30 is: 67,656.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,978.58 : 186,047.07 = 45,085.30 : x
  2. Step 2: Convert to fraction form
    123,978.58/186,047.07 = 45,085.30/x
  3. Step 3: Cross multiply
    123,978.58x = 186,047.07 × 45,085.30
  4. Step 4: Simplify right side
    123,978.58x = 8,387,987,965.07
  5. Step 5: Solve for x
    x = 8,387,987,965.07/123,978.58
  6. Step 6: Final answer
    x = 67,656.75

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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.