Home / 155,049.16-213,969.30-87,975.88

Finding the Fourth Proportional to 155,049.16, 213,969.30 and 87,975.88

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Solution

The fourth proportional to 155,049.16, 213,969.30 and 87,975.88 is: 121,407.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,049.16 : 213,969.30 = 87,975.88 : x
  2. Step 2: Convert to fraction form
    155,049.16/213,969.30 = 87,975.88/x
  3. Step 3: Cross multiply
    155,049.16x = 213,969.30 × 87,975.88
  4. Step 4: Simplify right side
    155,049.16x = 18,824,137,460.48
  5. Step 5: Solve for x
    x = 18,824,137,460.48/155,049.16
  6. Step 6: Final answer
    x = 121,407.54

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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.