Home / 149,772.42-206,668.98-86,130.72

Finding the Fourth Proportional to 149,772.42, 206,668.98 and 86,130.72

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Solution

The fourth proportional to 149,772.42, 206,668.98 and 86,130.72 is: 118,850.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,772.42 : 206,668.98 = 86,130.72 : x
  2. Step 2: Convert to fraction form
    149,772.42/206,668.98 = 86,130.72/x
  3. Step 3: Cross multiply
    149,772.42x = 206,668.98 × 86,130.72
  4. Step 4: Simplify right side
    149,772.42x = 17,800,548,049.07
  5. Step 5: Solve for x
    x = 17,800,548,049.07/149,772.42
  6. Step 6: Final answer
    x = 118,850.64

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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.