Home / 187,389.16-280,887.90-82,119.40

Finding the Fourth Proportional to 187,389.16, 280,887.90 and 82,119.40

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Solution

The fourth proportional to 187,389.16, 280,887.90 and 82,119.40 is: 123,093.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,389.16 : 280,887.90 = 82,119.40 : x
  2. Step 2: Convert to fraction form
    187,389.16/280,887.90 = 82,119.40/x
  3. Step 3: Cross multiply
    187,389.16x = 280,887.90 × 82,119.40
  4. Step 4: Simplify right side
    187,389.16x = 23,066,345,815.26
  5. Step 5: Solve for x
    x = 23,066,345,815.26/187,389.16
  6. Step 6: Final answer
    x = 123,093.28

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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.