Home / 78,150.88-117,225.51-18,987.27

Finding the Fourth Proportional to 78,150.88, 117,225.51 and 18,987.27

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Solution

The fourth proportional to 78,150.88, 117,225.51 and 18,987.27 is: 28,480.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,150.88 : 117,225.51 = 18,987.27 : x
  2. Step 2: Convert to fraction form
    78,150.88/117,225.51 = 18,987.27/x
  3. Step 3: Cross multiply
    78,150.88x = 117,225.51 × 18,987.27
  4. Step 4: Simplify right side
    78,150.88x = 2,225,792,409.26
  5. Step 5: Solve for x
    x = 2,225,792,409.26/78,150.88
  6. Step 6: Final answer
    x = 28,480.71

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1.5x scale

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.