Home / 149,640.24-206,513.64-86,003.40

Finding the Fourth Proportional to 149,640.24, 206,513.64 and 86,003.40

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Solution

The fourth proportional to 149,640.24, 206,513.64 and 86,003.40 is: 118,690.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,640.24 : 206,513.64 = 86,003.40 : x
  2. Step 2: Convert to fraction form
    149,640.24/206,513.64 = 86,003.40/x
  3. Step 3: Cross multiply
    149,640.24x = 206,513.64 × 86,003.40
  4. Step 4: Simplify right side
    149,640.24x = 17,760,875,186.38
  5. Step 5: Solve for x
    x = 17,760,875,186.38/149,640.24
  6. Step 6: Final answer
    x = 118,690.50

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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.