Home / 149,798.72-206,733.12-86,156.48

Finding the Fourth Proportional to 149,798.72, 206,733.12 and 86,156.48

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Solution

The fourth proportional to 149,798.72, 206,733.12 and 86,156.48 is: 118,902.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,798.72 : 206,733.12 = 86,156.48 : x
  2. Step 2: Convert to fraction form
    149,798.72/206,733.12 = 86,156.48/x
  3. Step 3: Cross multiply
    149,798.72x = 206,733.12 × 86,156.48
  4. Step 4: Simplify right side
    149,798.72x = 17,811,397,918.62
  5. Step 5: Solve for x
    x = 17,811,397,918.62/149,798.72
  6. Step 6: Final answer
    x = 118,902.20

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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.